We also have been there three times. There have never been too many people there each time we went so security is not a problem. There are tables, chairs, etc and we have just stuck stuff inside shoes under the chair. Lots to do or just walk on the beautiful beach. It is so pretty that the Corona Beer commercials were filmed on the beach there. The two palm trees and lounge chairs are there for you to sit in. The Mexican buffet is good and you can make it as spicy or mild as you want. The beer, margaritas, and rum punch are ever flowing. There are showers and restrooms and about three small gift shops.
Just a quick bus and covered ferry ride and you are there. Just remember.. the booze is free and we have seen folks that were in misery on the return trip due to too much sun, sand, and booze.
You'll love it.