I think a better question is what NOT to bring.... Don't bring a bra. It's worthless. No swimsuit tops. No pants. Don't bring anything you wouldn't want to lose - i.e. leave expensive sunglasses, shoes at home. Can't tell you how many pairs we've lost. Leave your dignity at home. Be prepared to lose your voice. I don't bring a watch. I don't leave a phone number of where we'll be. I find that leaving those things behind is a good way to make sure you'll have a great time. ;-)
I wanted to add for smokers this is a must .. don't get the one with a removable gasket .. a drunk will take it out and play with it and break your case https://www.amazon.com/dp/B01M6Y243...bed2-e57fb9696522&ie=UTF8&qid=1548985788&sr=2