I didn't look to see where you are located. The Shops of Legacy in Plano has good restaurants and things to do.
Loft 610 is a nice restaurant and night club...however it will get a little loud as the night goes on and you might not like that. You can dance there and have a good time.
We like Nylo. The hotel located on Headquarters/Preston. The set up is similar to Hotel Zaza downtown. HUGE outside area by the pool and fire with music and bar. Inside has some nice places to sit as a group and enjoy a cocktail or so. They also have good food and restaurant area. I've not seen people dancing at Nylo, maybe I was just not paying attention but we have been there until the wee hours and I don't recall seeing dancing.
Watters Creek is a nice area. More family friendly and not so couple friendly but they do have music on Fri and Sat. Cru bar is nice.
We've been invited to Club 300 or something like that in Addison. It is supposeldy a bar type atmosphere and they have bowling. The website looked nice...we were unable to attend.
Whatever you do, Have fun!!