I have a reward for two comp nights at Aria that's 198k LP. I also have one comp night Sun-Thursday for 200k. The 200k reward has completely different fine print when it comes to exclusions. Two night comp (198k) which is cheaper states not available for existing or consecutive reservations. One comp night (200k) Sunday-Thursday says only not available for existing reservations. What exactly does existing reservations mean according to MLIFE?