We were there in late April and we did use the mug and all the ice machiens we encountered were working.
You can pull up to tehunloading area and CMs will help you unload and put your luggage on a cart. You then go check in. If YOU want to take the luagge, you just take the cart from there, If you want THEM to take your luggage, they will do so, but it could be a 1-2 hour wait. Still, we do that- drop it off, get a room key, head to a park and reunite with our luggage later!