J.J.
Oasis gymnastics is at 87th Ave, just south of Bell does gymnastics parties that are age appropriate and lots of fun with obstacle courses or parachutes, etc. Hubbard Family Swim School also does birthday parties. I believe they are at T-Bird & the 101. If the kids can't swim, the parents must be in the pool with them. Personally I never cared for Peter Piper because all the kids scatter and do their own thing and never really get to play with each other. But, to each their own. There is also a place called JumpStreet on Bell & 51st Ave. They have trampolines for kids. Haven't been there (it's new) but I've heard that they have an area for younger kids and older kids too. Have fun!