yes they do.
i check out in the afternoon from the hotel and store my luggage with the bell hops at the hotel.
i then go to the park for the rest of the day.
i return to the hotel, and freshen up before my car service comes.
i do a night flight each year.
do this:
pack changing clothes in a small bag, could be plastic.
tie that bag to the luggage handle when you check the belongings to the luggage area.
when you return from the park, show your claim ticket and have them bring only the plastic bag to you.
then go to the pool room and shower.
when you are ready to leave the hotel for home, pick up your luggage at that point.
you are given a claim ticket when you belongings is being held for you once you check out of the hotel.