I've been reading about dengue fever being a problem in Costa Rica. I'm going to be in Tamarindo, Drake Bay, Arenal, and Sarapiqui. Should I be concerned about getting it in all these places or just some in particular? Also, we are going surfing a couple days in Tamarindo. Do we want to spray ourselves with bug spray before we go out surfing along with putting on our suntan lotion? Does anyone have any helpful hints? Thanks in advance, both my son and I are people who mosquitos love.