Don't bother with the Silver Nugget, it's a dump. They had a terrible game (two of them actually) when I was there last year and I'm sure it hasn't improved.
If you're heading up north you might check out Texas Station and Fiesta. The Texas Station has a nice little Martini bar in the back and lots of tables. I've never been to the Fiesta but it is worth a look since it is so close.
As Shadroch said, check out the promo at AZ Charlie's (for the first day at least) and maybe drive on to SunCoast/Rampart if you're in the area. The SunCoast is incredibly vulnerable in many ways (but you didn't hear it from me!

).
-Sonny-