While I have not been on those specific cruises, I have been on one that was along the east coast that ended in Florida. We had a tender port on that cruise and we had to go down 3 or 4 steps to get into the tender. There was a person who went that required a w/c, but they were, with assistance, able to navigate on foot the steps. The w/c was folded up and went along with us. If you are unable to walk, even with assistance, I would not recommend using the tender.
You can phone ACL and ask if the cruises you are interested in have any ports that require a tender. I have always found the people who answer the phone to be very friendly and helpful, and if that person does not have an answer to the question, they find someone who does.