Just checked out your listings for Dallas. May need to actually talk to some locals some of these places are not what I would call kid friendly.

Fair Park is in a sketchy part of town and basically no mans land outside of September-October.

The 6th floor museum is about the Kennedy Assassination. Doubt many kids would find that interesting.

I was really surprised to see Twin Peaks and Bone Daddys on there. You know these are basically Hooters, PG-13 versions of strip clubs. A Bike gang met up at one in Waco and shot the place up.