I thought we would arrive tomorrow around 3 pm, but it's looking like more of a 10am arrival. Also, my stroller arrives tomorrow morning and I'll need to get it from the bell services. Can I complete the check in paperwork around 10 tomorrow, grab the stroller and leave until around 5:00 pm? Will they give me the key and just activate it when the room is ready or will I have to wait in the line after 3 when check in officially starts? Thanks!