20 years old girl on spring break?

Me, my boyfriend, my boyfriends best friend and his girlfriend, we're all going to Panama City Beach for spring break. The problem, I think, is that I'm the only one that isn't 21 yet (but I will be in May). Will I not be able to get into the same clubs and parties as they can? I don't want to ruin their spring break because I'm too young. Do the clubs and parties there let in 20 year olds? Do the bouncers only check for the year and month or just the year (since I'm so close to 21 would I be able to slip by)? thanks!