I'm not sure how transparent some of the the promos I see from Delta (and other airlines) are but I get your meaning. My own experience is that it's much easier to get room comps in Vegas than AC for summer weekends but the availability seems to change based on what and how much I play. I never tracked it too closely.

For another hypothetical, suppose I am in AC for 2 days and play regular slots and earn 2k TC total.

Is there a difference in how your theo is determined if you:
A) earn 2k TC in 1 casino on 1 day
B) earn 1k TC in 2 separate casinos on 1 day
C) earn 2k TC in 1 casino split between 2 days
D) earn 1k TC in 2 separate casinos split between 2 days

assuming of course that the casinos are CET (Ballys Caesars or Harrahs). This is one part of the program that I never understood. I've always been leery of the promos where you need to play in many different casinos to earn TC bonuses.