Find a way to do something different during your cocktail hour if you can. It can be playing a montage video of photos of the bride and groom or having a photobooth or a game table set up. You can hire live musicians to walk around serenading guests or even those live moving tables to serve your appetizers on.
I knew I wanted our guests to be entertained throughout the event. I wanted them to be kept busy and eating and having fun. Those who saw the strolling magician raved about him and it was definitely a highlight and hit of our event that I was so excited about.