Well friends, here's the truth: I'm not a huge fan of indoor playplaces. I'm sure some are awesome, but others are expensive and boring for at least one of my kids.
So this week I took the Ninja Warriors to the Texas Rock Gym.
I don't know a darn thing about rock climbing, but I do know that Texas Rock Gym is open to all ages (with harnesses small enough for my 3 year old). I also know that all 3 of my kids (3, 6 & 8) could boulder (without clipping in their harness) and auto-belay (without requiring their mom to belay).
If rock climbing is going to be your "thing", check out the memberships. (These come with fitness classes and guest passes for friends.)