I wore tennis shoes in WDW for years, switching off pairs every day. A couple of trips ago I bought the Nike Straprunners per this board, and they are WONDERFUL!!! You also do need to break them in a little bit, I had a tender spot on the tops of my feet for about a week, but that went away. You can get them at Dick's Sporting goods, about $30. I also got dh some, he loves them as well. They are not ultra fashionable, but considering the comfort they are terrific. The Teva's didn't even compare, and they were much more expensive. Teva's may also only come in whole sizes...I THINK Straprunners come in half and whole, although they run a little large, mine are a smaller size than usual. I don't do anything to my feet when I wear them. I would worry about putting antiperspirant on my feet...is that healthy? It is natural for feet to sweat. But then again I suppose it is natural for underarms to sweat, too. The straprunners are great!