I have good friends that are coming to Aruba at the end of the month. The husband just finished a grueling treatment for cancer, which had returned and metastasized. They need a few days to relax and get away. He hasn't gotten all of his strength back and is still experiencing some pain. I'm sure that he will need wheelchair assistance at the airport on the trip home, just getting through the airport process. He might also need a wheelchair when he arrives. I have no experience with this. I've read that a person can reserve them online, but I've also read that people have requested them at the check- in counter. Can someone offer some advice? If they can request it at the check-in counter, how long does it usually take for someone to appear? Thanks!