I moved to a tiny island off the coast of Panama about 3 years ago, and haven't been able to set up tanks yet.
Took me 2 years to find places on the mainland that sell tanks (there are none on my island) large enough for my needs, and with just the newness of settling in, time and logistics haven't allowed for anything but the necessities of learning to live in a rather more primitive place, with a new language.
Beside buying a tank, just getting it to the island is a major logistical, and relatively expensive process and project.
Add to that we often are without running water for weeks, and take showers under the eaves during monsoon rains, and using rain or sea water to flush toilets.
My plan will be to set up a few tanks, using rain water of the roof into a catch basin for water changes, and going to the mainland to catch native cichlids. This will also be an interesting project, just to get them back alive. It will not take hours, but probably a matter of days, or a week or more.
Until that occurs if and when I get a tank, salt water fish would be much easier to get, although that doesn't really spark all that much interest in me.