Housekeeping, front desk, maintenance and events, coordinated without a radio squawking in front of a guest.
An earpiece and a screen-off handset in a pocket, rather than a radio on a belt at volume. Audio keeps flowing with the screen off.
Housekeeping does not need to hear kitchen traffic, but everyone needs to hear an evacuation. Both are one channel each.
Room numbers, guest names and incidents move across these channels all day. On private and org channels they are encrypted on member devices.