I booked through mlife, double checked to make sure that the mlife number was on my reservation, but my points value is at 5400 after checking out. I think I am missing quite a few points. I believe it should be 25 x base rate, which by my math is > 12k points. My guess is the room rate did not post and the 5400pts are from my gaming related activities.
I am going to be in las vegas again next week, guess I will be stopping by the desk at aria to see whats up.