We're going in September and I'd love to be prepared for the rainy days. I have amazing shoes for walking but I want something to carry in my bag to switch to if it starts pouring the rain. What footwear is recommended? I've heard crocs but I've never owned a pair of crocs so I don't know a thing about them... would I want clogs or flip flops for the rain? I have a pair of Birkenstocks but they are the plastic material. I got them for a beach trip and they would rub blisters into the tops of my foot. Aren't crocs made from the same material? Just looking for something that won't cause blisters and has good support for all the walking! TIA!