Kathy
If you posted this on the Caye Caulker message board how did it get over onto
www.ambergriscaye.com ? Caye "Caulker is our neighbor island to the south.
Sorry you didn't get what you were looking for.
To answer your questions
Yes, it is absolutely worth the money - which is about US $150.
It will not take up much of your valuable kick back time and if you love it like some of us you will want to do it more and more. Once you do the resort course and do the one dive that is included in the cost you can continue to dive with that instructor for as long as you are here at the regular price everyone else pays.
Sorry - I know nothing about dive operators on Caye Caulker. However, it is a very small island and once you get there a stroll down the beach will put you in contact with any there.
Harriette