My mother bought a pair of these shoes (beach model) after she read about them on this board.
We went to the store to buy them, and immediately, the salesman started telling my mother they would not be good for walking around disney world.
She bought a pair anyway (she had difficulty with the sizing because her foot is short and wide). Her feet swell consistently. Not just when she is walking, not just when she is sitting, there is no way to pinpoint specific times or reasons as to her foot swelling.
After wearing these shoes to wal-mart yesterday, she knew almost immediately they would not work for her in disney. She read on the website that the shoes are not supposed to touch your foot anywhere but on the bottom, so that is how the pair she bought fit her. She thought that would be good, because her foot would swell and she would still have room in the shoe. When her foot started swelling, the shoes did not stretch with them at all and the top of the shoe began hurting across her foot.
I can see where these shoes would be comfortable for some, but my mother will not be packing them on our upcoming wdw trip!