Mike,
Thanks! I was actually on the site a couple of years ago but when layout changes were made, my login got deactivated or something. For a while, I just didn't mess with it. Now, I have re-registered and am back. Some of my old posts show up under "n3qtrtme".
On the bikini thing... I just wanted to make it VERY clear that almost anything can be overcome. The scars on my belly bothered me a lot the first year, then I decided that I wasn't going to let them hold me back and make me wear grandma bathing suits! The hubby always nagging me to get back in the bikinis didn't hurt either.
I have ALWAYS wanted to dive Cozumel and am very jealous of you! I have done the diving with the manatees in Crystal River and shallow diving in the Bahamas post surgery. Seems like after chemo, it's been harder for me to stay warm than for a normal person - even 3 years later. So, I have to wear a wet suit unless the water is in the boiling range. Peeling a wet suit off and putting it back on while wet is a total nightmare. I did get a dive skin to help with that just in case I really had to peel it off to pee. I have more output in the mornings because of my coffee habit, so I planned for afternoon diving. That way, I could have my coffee, stop drinking fluids, get it out just before departing, and then be in pretty good shape for many hours. On the boat, I'd just take a few sips of fluids until we were done diving. Crystal River sends you out in boats without heads, so that was my plan and it worked out OK. In the Bahamas we had a head, so I made sure to empty right before getting wet, then I was good.
Looks like most 2 tank dives in Cozumel run about 4 hours. That's a doable period if you prepare for it. The water is at 79 degrees right now, so you probobly won't need a wetsuit. I would not worry about leaking/mucous. You can always wash out your trunks in the restroom back at the dive shop, if you need to. Or, you could bring an old pair of underwear to wear under your trunks and those will trap the mucous but let the pee out, then toss them when you finish diving. Goodbye mucous! If you are still concerned, there are some dive shops (try Dive Paradise) that do have boats with a head. If I wanted to go out for longer than 4 - 5 hours, I'd make sure I talked to them or did some research on the internet to find a boat with a head. I bet if you talk to them and explain why you need a head, they'd be happy to accomodate you. Worst case, you can explain that you need to pee to the dive operators on the boat, wait for everybody to get in the water and get busy diving, then go to the bow and take care of business, then get back to diving. You don't even need to tell them that you need to cath... heck, they'll probably turn their backs to you and they will never know.
Anyway, have an awesome time and let me know how it goes!
Christine