I am hoping to pack light but can't decide whaheard the smart choices to take for foot wear. Do I need to bring water shoes? So far I plan on bringing flip flops, hiking sandals and nicer sandals for evenings? Would hiking sandals work in lieu of athletic shoes? We will be in Khoa Lak, Koh Lanta and Ao Nang. Any help with packing light but smart would be very appreciated!!!