Friends have been there and they really liked it, but I've never been and I only live 2 hours away from DFW. I've lived here for 18 years and I absolutely hate going to Dallas or anywhere in that area. It's all traffic, all the time, with roads that make no sense at all, with toll roads all over the place to get more money out of you when the frustration of how bad the traffic is finally gets to you.
The only thing that I've done in the Dallas and Ft Worth area that I would do again is go to Cabelas.
Otherwise, I would be asking what there is to see and do within a days drive of Dallas that gets you out of that area.