There is no climbing necessary to see the mask, but a fair amount of walking. You only need to climb if you want to get atop of the pyramid. There are benches on the way to to pyramid and spaces to lean on. Bring water please.

It all depends on the health of the person, it could go around in wheelchair. But if he can walk definitely is a must to visit.

Yes, as long as the heat/humidity doesn't bother her.

Depends on age and their ability to enjoy the historic site. This is not a playground even though there is plenty of space. There are plenty of opportunities to get lost so you need to keep a close eye on them.

We went on a cruise. I don't think there are any resorts anywhere near the ruins. I did see there are a lot of private tours . Try searching Quintana Roo Mexico. That's where the ships come in. It might even be worth finding a Spanish speaking travel agent to help you. I think the drive from Cozumel is probably also an option. Hope this helps

Hello, unfortunatelly, there are no railings on the structures for preservation purposes, but the temple of the Masks in Kohunlich is the only that has some ropes and wood posts that can be used to help visitors on their way up and down, it is on top of a small hill which it is not difficult to hike, at least you can make it to the base of the temple on top of the hill and then decide whether go up or not. Most structures are not very tall and I am sure you'll be fine. I'd just recommend you to be careful if you decide to climb the biggest structure in the west residential complex (the acropolis) because is quite tall as well as the stairway steps; it is a quite wide stairway but be careful considering your vertigo. Kohunlich is 2hr away each way from the port but it is definitely worht it, is bigger than Chacchoben, no crowds at all (because is remote) and beautiful. Chacchoben is only 1hr ride each way, is smaller and has tallest buildings although has way more restrictions for climbing them, so basically anyone is allowed to go up on any of the structures but the great base which is a platform that has two more temples on top of it but the stairway is very similar to the one in the acropolis in Kohunlich, although one of tis two stairways has tall walls so you may be able to hold on the stones using them as a handrail.

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