Well, folks, all this input is very helpful. For what it's worth, I'm searching for a largely English-speaking, warm place near the water to retire (not to work, although I might eventually be persuaded to join a small business venture).
I would look to buy/build a home after a while, and should still have some IRA funds left over. After owning my home, I would like to be able to live decently* in a built-up area on about $1,200 US monthly.
If the cayes are too expensive for the above, do you think a mainland city (my geography's a bit fuzzy - Corozal?) nearby might fit the bill? Or should I keep looking elsewhere. I know there are many inexpensive countries nearby, but the need for Spanish is my downfall.
So, it appears that if the affordability numbers would work for me, after my arrival I should just keep renewing my tourist visa until I could work to gain permanent residency, right?
*"Living decently" to me is having A/C (or a dwelling that I can keep fairly cool), internet access, fairly safe neighborhood, and a "reasonable" barbill (ha - cheap beer anyway). Otherwise I'm ready to go native to a large extent, food-wise, basic needs, etc.
Thank you all again. I am reaping a great benefit from your practical experience and observations.
PS: I should add that it is just me, i.e, no family to worry about.