I didn't get any vaccinations before our trip last July. I don't plan on getting any for our trip in May. The resorts are very well maintained, it would be highly unlikely that you would get anything. I wouldn't worry. The Excellence is very nice and the grounds are well kept. They provide you with bottle water so just stick with that.. I am not sure if they spray for bugs, and I know that some people on tripadvisor say that they have had bad experiences with it, but when we were there, we experience no bugs/no mosquitoes. I had bug spray just in case from all that I had read and never used it once. I guess it is just certain times of the year when they are bad and probably a hit or miss. Hope that helps.