When I go to Myrtle Beach, I notice a large group of younger people (not sure if they are locals or not) around the downtown area (where the Pavilion was at).

Myrtle Beach is nice for everyone, they have something for any age group! Even if there's not a large gathering of Spring Breaker's, there's a ton of clubs to really enjoy your time there!

And thanks for the welcome to forums! I will give as much input as I can. Like I said, I really enjoy visiting Myrtle Beach (actually I am leaving for there this Friday for a week).