My thoughts exactly. Why not go with this role-playing and swoop in there, acting as if you are hitting on a gorgeous stranger that you are meeting for the first time?
Romance her and if she plays along, see if you can steal her away from her girlfriends for a bit or the rest of the evening.
Dress sharp, smell nice, and have your A-game on. As Bruce said, all with low expectations. Remember, how many times does a guy get shot down asking for that first dance?
I'm living vicariously thru you for the moment, Wes.