I think I already know the answer to this, but I just wanted to see what everyone else says. I brought a pair of shoes, and when I tried them on at the shop, they seemed fine. Im inbetween sizes so I got the smaller size as the bigger size felt like they'd fall off. Anyway, I wore them around the house to "break" into them, and everything was fine. I wore them out for a couple of hours as I thought there was no problem with them. However, when I got back, I ended up with blisters on both feet and not being able to walk anyway for the rest of the day! I want to exchange them for the next size up as I really like them, but as Ive worn them, I dont think Ill be able to exchange them will I?