What is the punishment if my friends are caught underage drinking, but I didn’t drink?

I have never drank alcohol, and don’t plan on it anytime soon. I am planning to go to the beach with my friends (all under 21), and they want to sneak in alcohol. The beach prohibits alcohol, and they do random cooler checking. With one look at my friends and I carrying a cooler, it’s a guarantee that we’re getting checked. Will I be in trouble with the law if my friends get caught, even if I didn’t drink?