We like to stay at Davidson's country campground, Merrideth woods is a great rv park also. I've never camped up there during bike week, we stay on the boat instead then just walk into the weirs area. As far as what to do, depends on your interest, there's so great riding in the area. I would suggest riding up the Kancamagous highway and Mt Washington auto road. The riding in the lakes region can be crazy that week. Where ever you stay when in Laconia during bike week "DO NOT HAVE ANY OPEN ALCOHOLIC BEVERAGE IN PUBLIC" it cost me a $100.a peace on the dead end road the my mother lives on, that I grew up on.
There's only three houses on the road and we were walking to one of the other houses when a plain white van pulled up and wrote us tickets. just a little something to keep in mind. I hope you enjoy yourself.I'll be happy to help with questions.
Shawn