Help maintaining my perm during hot weather?

Hi im going to visit Guatemala next week and im getting my hair PERMED the day before. My problem is the HEAT I dont want to sweat my hair out the first week. At night i have to wrap my hair but sometimes when i wake up my hair all puffy. Mind you im not washing my hair because i just permed it so some tips that dont involve LIQUID would help oh i plan on going outside a lot to thank you