Another idea is having your SM use a wheelchair on the trip. Either way, have a wheelchair waiting for you at both ends to use at the airport, either pushed by you or by an airport attendant. Because I exercise walk nearly 5 mi./day, I never noticed how much walking and ramps are involved on airports until I accompanied my 90 year old mom on a trip last February. Wheelchair bound folks board planes first, so even if she protests point out what an advantage this is.

Airport (and ferry) wheelchairs are huge and made to accommodate folks up to 450 pounds. I swear, their handles are twice the width of my shoulders so not the best for me ergonomically, plus at 5' 1" I am too short to see the wheels out of the corners of my eyes. If you think you will be pushing a wheelchair at any point, count and evaluate what else you will be carrying since you will have NO hands free. But for the kindness of (women!) strangers, I would not have made it on and off a ferry. In addition to wearing an uncomfortable backpack, I was pulling my mom's carry-on and carrying her cane, then learned they had a wheelchair she could use. In the wheelchair, she could carry her cane and my purse, but that meant I also had her walker to carry. And how to carry the carry-on while pushing the wheelchair? What a struggle as I tried to control the darn thing going uphill and downhill because my mom weighs about 30% more than I do, plus the added weight of the wheelchair. . . .I think the ordeal gave me my third hairline fracture of my pelvic bone and undying gratitude for the three strangers who rushed up to help me. I will forever try to play it forward.

BTW, I loved NO when I visited 40(!) years ago when Delta Airlines had a $200 deal where you could fly anywhere they went with as many stops as you wanted as long as you completed your travel in 20 or 21 days. I think my then BF and I visited eight places -- way too many in that amount of time, but I think we spent three days and two nights in NO.