Well ive gone 4 of the past 5 springbreaks and live in iowa city as well and one thing for sure is the fake ids arent gonna work like they do in our city. Ive seen doorguys actually make someone take out their colored contacts bc they didnt match her id.....Everyone has coolers on the beach so you have nothing to worry about then....and no one is going to come up to you on the beach and ask to see id...atleast in my 4 years there i have yet to see that ever happen