I read somewhere that you can bring your own tubes into the pool at MB instead of spending $20 a day to rent. Anyone know how true that is? Also, is it true you can bring a soft cooler in? We plan on stocking up on flat of bottled water at Costco before we head there. (We live in Phoenix and are driving) I'd like to fill the cooler with bottles of water so we aren't spending a ton. We're doing this trip over 4th of July. As we are from Seattle originally, we decided to get out of town because Phoenix 4th of July's aren't like back home. We have a pool in our own back yard but something about Vegas on the 4th sounded way more appealing and lavish.