Hi, I have been trying to decide on footwear for myself and my bridesmaids! I have not been outside of Canada ever so I am not sure what the beaches are like. We are getting married at the akumal location! Are flip-flops impossible to walk in and is the sand to hot to walk on? We are getting married at 4pm. The girls would like to go barefoot but someone mentioned the sand would be to hot1? Any thoughts