Take your boots and head to Oaklawn!
Head to the Roundup just down Cedar Springs from Throckmorton "the Crossroads." If you don't know how to dance, then just watch the boys go by. Weekends are not for learners.
Cross the street and head to JR's for the white collar/preppy crowd. Around the corner is TMC, the Throckmorton Mining Club. It used to be very very dark there (with several wedding rings on the floor), but they did a remodel and it is quite open. Head to the balcony to look down on the boys at the dance floor.
If you want to look at "professional" dancers, walk down Cedar Springs about half a block to Moby Dicks. Don't forget Dallas is a "no touch" city. Well, at least the important parts--like the aqua netted hair!
Any of the Cafe Brazil's are good for Sunday Brunch. There is one on Cedar Springs on the other edge of the strip.
Parking is really bad there, so think about taking a cab there and finding a ride home.
I would go to JR's if I hit only one bar and did not know how to 2 step. Head upstairs on the deck if you want the less smoky scene.