In fact, New York City's W Hotels are now offering brides and grooms the ultimate social media experience for only $3,000. The social media concierge live-tweets the ceremony and reception, uploads pictures and videos to Vine and Instagram, and encourages the guests to use the specified hashtag.
I have helped couples set up blogs and websites for their wedding, but now they are wanting even more social media at their wedding. Currently W is the only company on the market today that has a designated concierge for social media. However, the wedding industry is confident that this will be the next big thing to come.
I personally see the benefits of having a sign at your wedding/ceremony with your wedding hashtag. It will allow you to create an instant, easily accessible photo album of your entire wedding. All the pictures will be freely donated by your guests, all you have to do is encourage them to use it.