There’s a survival guide to wedding shows here. It has information specifically for the Puget Sound area, but there are some good general tips in there as well. Along with having a lot of energy, and having comfortable shoes, the only other thing I would recommend is that you not bring along your whole bridal party. At the Seattle Wedding Show, brides would bring along SO many people that they would crowd other people out of the booths. You don’t need the opinion of everyone to decide who your photographer is going to be; just bring a couple of people that you trust.