PROM!!! First Time @ Prom!

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Hi Ladies! So it is my very first time going to prom and it is on a boat in San Francisco! it is this Saturday & I am super excited--but I have no clue on what to expect! Any advise? Any good prom stories? anything I should/shouldn't do?? I'm just going with a group of my friends! 
thank u so much & have a blessed day ladies!❤️