4a Natural Hair style need styling advice?

Hi, I'm debating whether i want to put curl products on my hair or not for my two weeks vacations on a tropical island. My hair type is 4a really manageable and i seldom straighten it. I don't want to flat iron it when i get there because of the humidity and frizz i will get so i was thinking of curling it but not sure if i should go to the salon or do it myself? if so what is the best product out there?