of 20 guys and 20 gals) Dress is casual but nice, dress to impress.  Shorts and a polo with sandals are fine.  No tennis sneakers, tees or flip flops. You'll be given a name badge, and if your alone we canintroduce you to a same sex buddy.     You are free to mix and mingle as you see at the event,   It is buy your own beverages.  The host will be making the rounds introducing people to each other.