First let me just say that this was my fourth cruise and DH's third cruise. We have been on Carnival and RCCL in the past and I've sailed an old line called Commodore back in the late '80s. DH is 37 and I am 36. We have no children. I am disabled (wheelchair) so we always get a wheelchair accessible cabin.
Embarkation: Slower than last year when we got on Explorer. This time there was some type of slowdown due to Customs so we wound up waiting awhile to board the ship. Also, last year, they moved my husband and I to another line due to the wheelchair. It was a special lower desk that was specially done for wheelchairs. This time we weren't moved and I barely could see over the desk to talk to the agent once we got to the front of the line. Not sure why they weren't using the other desk at all.
Cabin: 7600 is a handicapped accessible cabin and seemed slightly bigger than 7604 on Explorer. It seemed wider, but that could have been my imagination. The cabin is very nice. One word of caution, the sliding door to the balcony has this strange little platform that has to drop down in order to wheel out of the room. It doesn't drop on it's own so you do have to push it with your foot or something else in order to get outside. My husband who is not handicapped nearly tripped over the little metal thing several times. It seems more dangerous than anything else. The bathroom is great for a wheelchair, plenty of room to turn around and maneuver.