Actually, hotel staff has been able to see your play since at least August 2017.
The only reason I know this is because I showed up last minute in Laughlin very late one night that month well after Diamond/7* registration had closed, and I just walked up to the main front desk and asked for a room.
The way the front desk is set up there, you can easily see the computer screens with only a casual lean as opposed to having to rubberneck too much. The gal typed in my card info, hit a couple buttons and my tier score, RC balance, Property ADT, overall ADT, etc. popped right up.
Of course I have no way of knowing if all CET properties have this capability so YMMV.