We used it in April. It was so nice that DH was able to check in his golf clubs so we had more room in the car on the way back to the airport. At that time airline check-in was along the walkway from the front of the Hospitality HOuse to the back, across from the entrance to Olivia's.
Yes....just be sure to get there well before 1:00 pm (as it is when they shut down).....We got there last year at 12:30 and they had already shut down. It is very convenient when you catch it!!!!!
We just used the airline check (& baggage check) in last week. It is the best, not having to juggle all the suitcases and the kids and the stroller.
It was a little kiosk right on the main path between the Hospitality House (where you check into your room) and Olivias, but the previous poster is correct--get there well before 1:00 pm and if you want bell services to pickup your bags for you, schedule it early (like a day in advance) so that you geta time which is convenient for you.