You will certainly be hearing more from us!
We consider diving a true privilege too, venturing into a world so close yet so alien and getting to see so much beauty and wonder, it's been a revelation to me.
Giles, Alex and I did a blue hole dive about 15 years back which involved going through a short cave tunnel and coming out into a large cave before reaching the deep part of the blue hole (which then became open water). I absolutely HATED it, and the experience nearly spoiled diving for me for ever. So whilst I'm sure Giles and Alex would have fun in the cenotes sadly it's not something I'll ever attempt - I'm a scaredy-cat, fairweather diver, and am happy to stick within my limitations!
Do post more photos when you have time 