When I tried to make a PS for Fresh through Disney Dining in October, the CM couldn't do it for me although she was seemed surprised. I had to call the restaurant directly and was cautioned that the PS would only be held for 5 minutes because they had a huge convention starting that day. Huge it was too....buses lined up all over,parking lots closed, etc.. I don't know how often this happens but just wanted to give you a heads up.
Breakfast at Fresh was wonderful and I'm looking forward to returning!