score:5
According to the LA Times, the top 10 Spring Break destinations, apparently based on number of travelers to these cities during spring break, in 2012 were:
Cancun, Mexico
Punta Cana,Dominican Republic
Miami (South Beach)
Panama City Beach, Fla.
Puerto Vallarta, Mexico
Acapulco, Mexico
Montego Bay/Negril, Jamaica
Nassau, Bahamas
Cabo San Lucas, Mexico
Las Vegas
Two of them, both in Florida, seem to match your criteria.