Thanks. To clarify, I read here, that several floors (one of which is 32?) of the Mandalay are an independently run, “all-inclusive” resort with its own elevators and services.
Wiki actually has a description of the Mandalay Bay building.
https://en.wikipedia.org/wiki/Mandalay_Bay
...the Four Seasons Hotel is independently operated within the Mandalay Bay tower, occupying 5 floors (3539)...
... Levels 40-42 (numbered as floors 6062) are designed as penthouse suites, with a penthouse lounge on level 62 for guests staying in the penthouses. Level 43 (numbered as 64) is the Foundation Room, a restaurant and bar...