Has anyone worn Havaianas flip flops at WDW? I found some really cute ones decorated with crystals on EBay. I bought some plain ones and beaded ones (Tops and Joy (wedge) styles) first and they seem comfortable. However, before I pay $65.00 for the fancier crystal ones I want to make sure they're comfortable. They are described on the Havaianas web site as 'the most comfortable rubber flip flops in the world'. Anyway, has anyone worn them for extended periods?