Its not a requirement to actually have gone there to know anything about it.
They do this little thing called advertising. Here is the link to the exact activity I was describing:
http://www.atlantis.com/kids/kidactivities/crush.aspx
We can argue about whether or not you think kids grinding in a nightclub (until 1:00 a.m.)is family friendly...but don’t pretend that what I described doesn’t exist.
My! Don't you have a dirty imagination?
Get your mind out of the gutter!