If they say no then tell him on second thought you will be going to Vegas later in the year anyway so I think you will just wait till then. if they still say no, ask for a manager n try with them. Your friend told you about winstar, and you just wanna be able to test them out, while maximizing your potential to gamble more $$. If they at no, tell them the only reason you ask is because this happened to you before in Louisiana, and you no longer to to those casinos. The venues concourse adjoins WinStars newly opened, 304-room Spa Tower Hotel and features a new eatery, Session House Gastropub, and two new bars dedicated to concerts. Tell them just to make sure though if anything falls through or some unforseeable situation happens, you don't want to drive all the out there and be stuck out, so would they be able to comp you a room in that possibly.
Ask them their room rates and if it's ok to possible stay with your friends, even though you don't plan on doing much sleeping because you just got x amount of dollars and you wanna take your gf out for a good time. Depending on where u live, call the hotel and tell them you want to come stay there for a few days and you are meeting your friends there who have a comped room already.