GIRLS: I need a hair style that will hide my frizzy hair?.?

Going to Kennywood, and I need help lol. I have naturally curly hair, so when it gets wet, it gets big! I don't want to have to slather my hair back with gel and look like a mannequin, but also don't want to look like the cowardly lion after a water ride! Haha. Any up-do idea's for me girls?