Where abouts in the Metromess are ya'll?
If you're anywhere near Rockwall, Shananiganz is some good indoor fun for an 11 year old:
http://shenaniganz.com/Another good option that's got several locations is Urban Air Trampoline park (The one in Garland is brand new and awesome, we took the triplets there for their 5th birthday party and they had a blast)
http://www.urbanairtrampolinepark.com/And as far as the heat up here, compared to Houston, yeah it's hot... but it's a DRY heat!
Well... drier than Houston at least...
