I'm having a party and I need tips on how to make it good and not get caught by my parents. PLEASE ANSWER (:?

So I'm going to have a party at the beach in the summer, and I want it to be memorable. I'm going to clean up the beach. The shore isn't very big at my ideal place, so I might just change the location to another beach for a location. There WILL be underage drinking, but don't give me a shitload of nagging. Thanks :) please please please give me tips below on how to make it good!!