The bride and groom at many weddings to adopt a wedding hashtag to help them (and their guests) collect and share pictures and updates about their bash.
Here are some ideas on how to do it.Wedding hashtags and your guests
Pick Something Unique and Easy-to-Remember
There’s no formal registration process for creating a hashtag—anyone can just, well…pick one. For that reason, you want to make sure that your hashtag is totally unique to your celebration; so when you or your guests click your hashtag on Instagram, for example, your only seeing shots from your wedding. It should also be easy to remember, so guests can quickly type it in from memory after they snap a great shot at your ceremony.Wedding hashtags and your guests

Creating an easy and unique hashtag is not as tough as it sounds, I promise. A great strategy is to combine your names (first or last) or the date together. A couple with unusual first names might just use those (#<CristaandHoratio; using “and” not “&”—there are no spaces or punctuation in hashtags), while others opt to combine their new last name with the year (#Bradshaw2014). You can also try to get creative with other words related to your wedding. Such as an alliterative phrase, #theWellsWonderWedding, which could be used on both hashtag and website domain to keep things consistent. Try adding words like “wed,” “wedding,” “bash,” “union” or “hitched” (or anything else a thesaurus can come up with). Or opt for something memorable that’s unique to your nuptials (like #RogersandBakerelope or #BrownsBeachBash).
How do you know if your hashtag is unique? Search for it on Twitter, Facebook, Instagram, or any other network your friends and family might share to. One couple chose #willifordwedding before they discovered that another couple had used it for their wedding a few years back. Tacking “the” to the beginning ensured it was all theirs (assuming everyone types it correctly—another potential snag you should consider).
 Wedding hashtags and your guests
Share the #love
Now that you have a hashtag, let people know about it! Many share their hashtag right away through their wedding website and save the dates so the guests could tag their social excitement immediately. Your save-the-date suite could include stickers for your guests to mark their calendars and make sure one of those stickers features your hashtag.
Here’s a great example from a bride:
“Guests who visited the website also might have seen the Connect page, where we encouraged guests on “team bride” or “team groom” to friend us both on Facebook, and also introduced our hashtag with this bit of text:
If you’re sharing on Twitter, Facebook, or Instagram, use hashtag #thewillifordwedding. It lets us collect everyone’s well wishes and photos all in one spot on different social networks. Consider it a 21st-century guestbook.
It worked, since a few friends shared their excitement over receiving our save the dates right away via Instagram and Facebook.
I expect we’ll see a lot more tagging on the day of the wedding as our guests snap photos of their night. Which is why you might also want to…”
Post Some Signage
As guests walk into the ceremony, remind them to tag their photos and updates with your hashtag by posting some pretty DIY signage outside. Or include the hashtag on your ceremony programs or inside gift bags for the out-of-towners. Maybe you could use this for inspiration for your chalkboard sign?
The Master of Ceremonies could announce the hashtag while all the guests are seated and waiting for the entrance of the bride and groom for the wedding breakfast
Wedding hashtags and your guestsOn Twitter, the pound sign# (or hash) turns any word or group of words that directly follow it into a searchable link. This allows you to organize content and track discussion topics based on those keywords. So, if you wanted to post about Downton Abbey, you would include #DowntonAbbey in your tweet to join the conversation.
Never use a space. Even if your hashtag contains multiple words, group them all together. If you want to differentiate between words, use capitals instead (#AnthonyWinyardEntertainment). Uppercase letters will not alter your search results, so searching for #Anthonywinyardentertainment will yield the same results as #anthonywinyardentertainment.
Numbers are supported, so tweet about #<first_name>4<organization> to your heart’s content. However, punctuation marks are not, so commas, periods, exclamation points, question marks and apostrophes should never be used. Forget about asterisks, ampersands or any other special characters.
Keep in mind that the @ symbol does something completely different. Using @ before a person’s Twitter handle will tweet at him directly, letting him know you have written to him via the @Connect tab. A hashtag will not. Sometimes users will hashtag a celebrity’s name instead of using her Twitter handle — it is acceptable to tweet #Prince or @PrinceMusic. But if you are trying to reach someone directly, don’t use a hashtag.
There is no preset list of hashtags. Create a brand new hashtag simply by putting the hash before a series of words, and if it hasn’t been used before, voilà! You’ve invented a hashtag.
Most major social media platforms support hashtags. These include:
Twitter: Twitter is the birthplace of modern hashtag usage — its hashtags are more versatile than other sites’ (see “Tone & Voice,” below). Twitter hashtags are mainly used to denote specific topics of conversation; the “Trends” sidebar of your Twitter feed curates a list of hashtags you might be interested in, based on your tweets.
When you search for a hashtag on Twitter, there are three ways to filter the results. The “Top” option displays the most relevant and popular posts, including those from users you don’t follow. “All” shows you every tweet that uses the specific hashtag in real time, and “People you follow” will only display results from users you are following.
Facebook: Hashtags are not used as much on Faceboon. Nevertheless, clicking on Facebook hashtags will take you to a list of posts containing the same hashtag. The results are not limited to people you know.
Instagram: Hashtags can complement photos shared on Instagram and help you discover new accounts and pick up followers. Some hashtags were created specifically for Instagram photo challenges — #ThrowbackThursday, for example, encourages users to post retro photos. Vine uses hashtags in the same way — try accompanying each of your Vine videos with at least one hashtag to maximize shareability.
Tumblr: Tumblr posts have a special “Tag” section where you can enter tags. These tags function like Twitter hashtags, organizing posts by topic, but the hash symbol is inserted automatically. Hashtags included in the main body of a post are not transformed into links.
Pinterest: Use Pinterest hashtags to mark and search for content. Click on the hashtag in a pin description to navigate results that contain the exact hashtag, plus pins with the same word or phrase in the description.
Wedding hashtags and your guestsRemember, your hashtag’s visibility will depend on your privacy settings. If your Twitter account is private, only those allowed to see your tweets will have access to your hashtags. If you are using hashtags to increase your brand’s exposure, make sure your tweets are set to Public.
Here is an excellent article on how to choose/create your wedding #
There are some brides who ask guests to unplug at their wedding, and some who ask guests to go all out with the photo snapping and sharing. If you’re the second type of bride, you’re probably already brainstorming your wedding hashtag — you know, the one phrase that guests will use on Instagram and Twitter to round up pictures of your big day. Instead of the more standard conventions you’ve probably seen all over the place (something like, say, KardashianWestWedding or KimandKanye2014), we bring you 21 unique, creative ideas you haven’t thought of. Of course, replace them with your own names, initials, wedding locations, and such to make them special to your big day.
1. #HappilyEverHarrison
2. #RuizPartyof2
3. #ThatOneMalibuWedding
4. #Newlywedsontheblock
5. #SeanandCassGetHitched
6. #TomKat, #Bennifer, or any other celebrified combo
7. #MrandMrBaker
8. #TimandAnneinWonderland
9. #WeSaidIDoOnJune2
10. #KristenLovesJustin
11. #SmithNoMore*
12. #LauBeachBash
13. #ThisisOurWeddingHashtag
14. #StokedtobeaHorowitz*
15. #TwasaGoodKnight
16. #WeCameWeSawWeWed
17. #SamandNicoleKissandTell
18. #JessandTimTietheKnot
19. #KylieWedsCara
20. #AdventuresofJuanandCelina
21. #TandGForBestWeddingEver
*Maybe better for a bachelor/bachelorette party than a wedding?
Some information above has been taken from the following 2 articles: