On their website, off on the bottom right they indicate that all shows at 18 and up unless otherwise noted. They do ID checks at the door when you pick up your tickets. http://gobananascomedy.com/content_basic.php?page=clubinfo
Most shows are 18 and up. Some shows though are 21 and up so you really want to check the website for the show you want to go to before you buy tickets
Call the club. Humans work here.
I belive its 21 and up they serve alcohol
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