How to make hair and makeup last in Orlando humidity?

So I'm going to Disney world in a couple weeks with my friends and obviously, the humidity and heat down there in mid July is crazy! My friends and I like to style/curl/straighten our hair for our vacation but we want to know what kind of products would work BEST to maintain our locks. For example, how can I keep my hair straight in the disney heat? What hair product would work best? Also the same goes with makeup. What can we get that prevents it from melting off? Waterproof products are ideal :) thanks!