We're planning a trip in Feb - me, husband, niece, and her fiance. I had been playing for points in hopes of getting a couple of free nights in Vegas, but my nephew, who belongs to Sam's Travel Club found rooms at Aria for $95 a night and booked them, Thurs and Fri. From what I understand, now that he has booked the rooms and paid for them, we can't redeem points towards a reduction in rates now after the fact? Is this a good room rate, and maybe I should just concentrate on using my rewards for other things? We will still be staying Sat and Sun but had planned to stay downtown, but maybe we should use points for the next couple of nights at another hotel? Any advice for me? Also, I did sign up for an Mlife account online but don't think niece and nephew have an account. Would it be beneficial for us if they signed up for an account and would it help to let Aria know they and we have an account on our reservations? Would that give us a better shot at upgrading to a better room - even if it's just on a higher floor?