Verified answer

There aren't any nightclubs in Vegas that aren't 21+.

There's one place but, it's like a place where 16-year-olds hang out. It's a small building and is probably no better than a middle school dance.

If you want to have some underage fun, and not do all the touristy stuff, then I suggest going to a hookah bar. There are a few in town that are 18+ before a certain time. Great place to just chill with friends.

Teen nightclub - info

http://www.clubfrozen75.com/

~Jack~