If you are good little Gilt.com fan-girl/boy, you'll have this date already marked on your calendar. But just in case, I'll remind you :)
1. Make sure you go during the timeframe listed on your ticket-- it seems like they will be very strict on that.
2. Also, bring ID because they will probably check to make sure you didn't just photocopy someone else's invite.
3. Aaand, make sure you know where to go! I'm not going to write it here because if you don't know, then you obviously weren't invited. No gatecrashers!