You can bring your own food and drink into the pool
I confirmed with a guest relations person that you are allowed to bring your own beverages and snacks into the pool area. They even allow small (soft sided) coolers. I'm sure this doesn't include alcoholic beverages. Note that they serve Budweiser in those 16 oz bottles, so if a few of those made their way into your bag, no one will probably notice. Sneaky tip: 16 oz sodas are served in the same cup as a 16 oz beer/cocktail. Once done, this cup could easily be refilled with one of your own....