Rosevelt Hotel in hollywood is popluar on sundays for swimming?

This is a hotel i dont get why ppl just go there on sundays to go to the pool, they must have a chargine fee because usually at hotels only customers can use their pool. How much do you know if they charge?

And why do they do this?

The Sunday Pool Party is a place to see and be seen. They have been doing it for many years. Call the hotel to find out the charge: (323) 466-7000.