That would be correct those are the only 2 that are 21+ no matter what. You can take them into any of the other clubs stores etc. Just remember if you go on the weekend it is a place where people go out. You can encounter drunk people etc. They do sell alcohol on the street there not just inside the clubs.
I personally don't subject my girls to that unless absolutely necessary. But just like everything else, parents discretion. At the main stage area they usually have a live band and do the New Years eve countdown every night at midnight. That is fun.