Platinum and Diamond guests may drop off their luggage, but keep in mind the door may be wedged open so the stewards can work. I would not leave anything of value in that case. You never know who is walking by.
It used to be that Platinum, Diamond, and Faster to the fun rooms were ready when the guests boarded. Then some accountant at headquarters used a sharp pencil to eliminate a large number of hotel operations crew. Stewards were charged with more rooms to service, and it was impossible to offer the "ready when you board perk."
I like to be the first to board. I drop my bag and do a quick PM of the room so I can alert guest services of any problems with plumbing, lighting, HVAC, doors and latches, safe, TV, switches and fridge. On Spirit I found a sink drain with enough hair to reupholster a cat. They always take care of those things before the 1:30pm "rope drop"
