Hi! I'm in the process of planning my son's 7th birthday party. We are considering having his party at the local Ymca which has a new building that houses a children's activity room. The activity room has a small version of a climbing wall (horizontal rather than vertical) and children's fitness equip. as well as a tree house with slides. I was wondering what theme might fit this type of party as far as the cake, plates, etc. We will have an hour in the activity room and then an hour for the cake, etc. I thought I might need to plan a few games or have something on hand in case the kids got tired of playing before the hour was up and/or if they finished the cake, gifts in less than an hour. Any ideas would be greatly appreciated. Thanks