The Texas Renaissance Festival? As a fellow Texan - and fellow Houstonian, no less - my first pick is Lone Star Patriot. Neither of us would have to drive very far. Seriously, Magnolia is not so far, neither is Todd Mission.
Y'all - yes, we say that here - should experience this greatness. Of all campgrounds, there are none so excellent as those which espouse a festival atmosphere. Due to the droughts and wildfires that nearly destroyed the county (Bastrop, IIRC) about 4 years ago, TRF did away with their orchards, and expanded their campgrounds. Potable water and proper restrooms were added.
Whom, among Y!A users, would you take to this fantastic festival?