Hello, this July-August I am heading to Disney with my sister(19) and my friend (16), I am 16 also, and another 16 year old may be with us. Now I was wondering, to do things such as mini speed boats and the like do we need power of attorney letters or whatever? Also can ultimate park hopper be added to only certain room keys? And can the person not have the same last name as the room owner? THanks 
