I wouldn’t think it would be a problem. I found a couple links that might be helpful to you:

http://www.phatmass.com/phorum/index.ph … opic=65022
http://forums.catholic.com/showthread.php?t=422185

Partying during Lent isn’t a bad thing, especially since it is for a particular occasion. I’d say go out and have a good time, but be mindful of your own Catholic values and morals. Don’t get wasted, but enjoy celebrating the occasion.