Joolz, yours was a really unusual situation. Most tourists never get anywhere near a fire ant. You stood in ground that had been worked over and cleared ready for building, so they would have been all around you!!! The only time that I got bitten by them was when I stood on our building lot!!!!

If you just do the normal tourist things, like vacation at a villa and visit the Parks, on your next trip, then I am absolutely sure that you will be fine and won't even be aware that these ants exist.