I am sure the lobbies do have cameras.
How would cameras in a lobby prove that no other persons exited Paddock’s rooms?
And it may have been possible via a stairwell to escape UP to the Four Seasons, which starts on the 35th floor of the same building.
Don't need to prove that. Just need to run all the IDs from all the guests and rule them out. At this point everyone who stayed there is a suspected accomplice.
And it may have been possible via a stairwell to escape UP to the Four Seasons, which starts on the 35th floor of the same building.
The 4 seasons would certainly track anyone entering from stairs or elevator.