First suggestion, don't buy lobster or any seafood for that matter because it's stupid expensive and don't expect to be jamming a hollow rod into a tree and get syrup and do expect to have a sharp intake of breath when you come off onto that jet way. Don't ask the flight attendant if air traffic control diverted the flight to hell, you are in Dallas. Keep telling each other "it's not the heat; it's the humidity". We do this a lot and I am not sure what that does as it doesn't make it more bearable. However, with the winter and spring you guys have endured, it might not matter.
A cool place to hang late in the day is downtown Ft. Worth, more town than city, around Sundance Square, good restaurants and watering holes. If you go to Dallas, city of pride, just ask them, the best place they have going is the World Aquarium where you can beat the heat inside and if you choose, swim with the penguins. Then, the Dallas Police may choose to let you surf with the inmates so I would pass on that. Be sure and take a selfie with the sloth, post it and ask people to identify which one is you.
First time we went there, they were feeding the sloth and they chew as slow as they move and my wife sat there holding a piece of sugar cane while he munched on it in slow, or I guess it would be sloth motion. She fell in love with it and wanted one and I said absolutely not. Think I want something hanging around the house making me look slower?
Back in the day, folks came to DFW for a variety of reasons, women came for one...to shop. At one time we all had our own malls, I called mine CouchCoach's Calico Corners because alliteration makes me horny. The malls are still impressive, particularly The Galleria, and you may have to do that manly thing and walk around with your girlfriend all the while turning ever so nonchalantly to check out some extra fine derrieres and if you get caught just say "hey, that girl looked just like your cousin Jenny, were they coming to Dallas"? It doesn't work but at least you are not penalized points for lack of effort. And I would suggest this in the am if you're planning on a little "afternoon delight". Helps to let the anger pass.
Well Jagsy, hope CC's Travelogue has aided in your plans and don't forget to visit my sponsors and tell'em ole CC sent ya.