For our dance in Washington, you have to basically look professional. So if your dress is strapless or spaghetti straps you might want to bring a shrug or cardigan. You can take it off once you start dancing. And you also have to wear shoes the whole time no matter what, so if you're wearing heels you basically have to wear the heels when walking on the boat, getting food, and getting off the boat (for D.C. that is). other than that bring flip flops!