OP, I wanted to chime in to let you know that I got pregnant on a day 6 transfer at Shady Grove a couple of years ago. I transferred two embryos and am pretty sure that one of them was hatched when it was transferred, based on the picture. I am not sure if they did assisted hatching or not - I never discussed it with them and was not paying out of pocket. I also ended up having two left over to freeze from that cycle, and I think the reason they went to day 6 was to see which ones were doing the best. Best of luck to you.