.........walking into any hotel no matter whether there on business or fun you start noting the location of camera, lifts, friendliness of doormen, key card access, and general busyiness of the staff.
..........you start walking into random hotels and inspecting them for all of the above. Just in case.
...........you pop an ad up for your vacation destination. You never know.
............you can knick towels from a housekeeping trolley, without breaking stride.