Sorry for the long reply but this has been our packing list for many out of country dive trips and have served us well. I hope its helpful to you.
Packing hint: In your carry-on, pack you regs, dive computer, mask, swimsuit, camera, toiletries, and any "must have"... in case your luggage gets lost. At least you will have the essentials and can rent the rest until your gear shows up.
In additon to your list, we also pack....
photocopy of Passport & credit cards
10'-0" of light rope for a laundry line
Save-a-dive kit (zip ties, duct tape, multi-tool, o rings, extra mask strap, fin strap, mouth piece, bic lighter)
extra batteries and o ring for dive computer
mask defogger
dive insurance and emergency contact telephone numbers
trip insurance
did you service your regs?
suncreen
bug repellent with high % DEET. Milder versions will not keep sand flies away
UW torch for night dives
signaling devices (airhorn, sausage, mirror, whistle)
sea sick pills
Sudafed
extra prescription galsses and/or contact lenses
alarm clock for those too early morning dives
non-slip flip-flops
extra swim suit
a good book
very small sewing kit
Also if you will be taking your gear back to your room it is very helpful to have mesh style bag with shoulder straps.
We remove any dive related labels from our lagguage that hints of dive gear to lessen the chance of theft.
Weigh you bags to make sure that they are each under 50 lbs or you will get surcharged. Check airlines to see how many check in bags you are allowed or you will pay for that extra bag. In general one check-in bag and one carry-on (not including a woman's purse) is allowed.
Have a great time!!!!