I had comps at Excalibur and Luxor - I booked 3 nights at Excalibur and then the next 3 at Luxor for the end of July and I got this e-mail: I am writing to you, to inform you that you currently have 2 trips pending for July 2015 at the Luxor and Excalibur. Unfortunately these are both being booked under casino promotions. MGMs policy is that promotions cannot be booked at the same time nor back to back, they must have 72 hrs in between stays. At this time one of these reservations needs to be cancelled or booked under your tier rate. anyone ever heard about this before?