most certainly you will have to pay something, as well as likely stand in line unless you have either $$ or babes (they serve as currency in the clubs/pools out there). Typically a fairly high cover for dudes....maybe $30-50, depending on how busy they are. Chicks are normally free unless they're fat or ugly post a pic of the 21 year old babe and I'll let you know whether you can get inside the pool area or not
You can get in the pool if you are a hotel guest. There's also a Day Club area, that you'd have to pay for. Marquee, from what I recall, is like 90% Asian, which is fine with me...just letting you know. I was at the grand opening of that joint (used to live in town) and it looked amazing...like a mix of the old school with style. Cosmo's schtick is that they're the only strip hotel where all the rooms have balconies. They were originally going to be a condo/hotel building, but scrapped the whole condo thing when the economy was busto and the original owners had to sell. Tip #1 I believe they still have the new promo where if you lose $100 in slots/video poker on your 1st day of having their new member card, then they'll re-up your card with another $100 in free play. Tip#2 Book & Stage Bar on the bottom level has comped premium drinks...almost like mixology drinks ($10-$20 value) when playing quarter (possibly nickel if I recall) video poker. Get drunk on the good stuff and get your 99% payout at the same time. Tip #3 Best deal for going to a club is bottle service and reserving a table...which will start you at $600 for a group of 4, and that's the best clubs but the outside tables unless it's a slow night. Never book directly with the club itself unless you're a high roller.