I have Rheumatoid Arthritis and am overweight! The crew I had was VERY helpful. They have a very good ladder that they put at the back of the boat and they help you in. This is always a concern with me when I attempt to snorkel BUT THIS WAS THE BEST CARE AND SERVICE THAT I RECEIVED. Just express your concerns when you get on the boat and they will help! Hope this was helpful. Have fun!!

Think so, but strongly suggest you get answer from the tour organisers.

Not sure about the water temperature, but I think they are pretty consistently warm there. I would suggest a T-shirt or better an SPF water shirt or wet suit. I did not feel cold here but my sister did, but she pretty much always gets goose bumps! The water is not especially fought because there is protection. If you are an average swimmer you should be able to swim through the arches, don’t be afraid, it is amazing!

We saw dolphins and the crew is very keen on making the trip interesting. As for being bored, well well well, you are from London, you've been cold for months, and on this trip, you will be in the southern Pacific with tropical breezes, wondrous nature all around and great Mexican hospitality and safety. Taking a long bus ride home from the Tube is boring - this trip won't be. There are some really goofy 200+ person tour boats that have bands, silly skits, buffet food (awful) and drunk foreigners. This trip is very different and intimate. Not so much the cattle boat. Cheers and I wish you a great trip.

This is a very comfortable, safe excursion and you can get in when you are tired or had enough. I must tell you that they do not rush you, in fact the marine biologist encourages you to stop, rest, float and let the fish come to you.