Add old photos to your gallery beforehand and have them already streaming on your Live Stream when the reception starts. These could be of the couple as kids or more recent photos of them having fun with their friends and family (who will likely be in attendance and will love seeing themselves with the celebrities of the day).
Place some signs around at the rehearsal and reception asking guests to take specific photos, or selfies and text them to your TacBoard number.
Make a photo station at your reception with fun props and a sign asking guests to snap some fun pics and text them to your TacBoard phone number.
Your guests will love it. It is fun, interactive and easy without being dominating, distracting, or obnoxious.
You will seamlessly collect hundreds of candid pics from your big day that you may have never seen otherwise.
You will have a lot of wedding photos to look at on your honeymoon before waiting weeks for your professional photos to arrive.