Adding to above, sometimes you are told to go to lobby at a certain time, sometimes there is a room set up with seats and (very) light refreshments like water, coffee, perhaps cookies. By then, your luggage will have been picked up.
Sometimes you are given a time to put luggage in hall - this is usually during the late evening. Sometimes you are to leave near the door inside room - this is usually in the morning while most would be at breakfast.
There is limited room to bring a carry on type bag along with you if you must.
Sometimes the buses run like clock work. Sometimes it is disjointed - was the last time in NYC!