I went through this all on Wednesday. Actually got through pretty quickly but couldn't get anything at Hollywood Studios. The castmember thought it was because those restaurants were not loaded yet, we continued on with our other ones for 9 guests, for 7 reservations got first choice on all but one had to be switched from Whispering Canyon to 1900 Park Fare, then we went back for HS and they were still not available, some type of error code. The CM said to call back around 2pm. Well I called at about 12:40pm and was able to get my 2nd choice for Fantasmic dinner, and the Sci Fi reservation lunch my kids insist on. I am happy now, and not going to try and switch anymore because in the long run I think these will work out the best for us.
Donna
PS. our original ones included Chef's de france, Chef Mickeys, Kona, Boma, Le Cellier (wanted and got Lunch), San Angel Inn, and Cindy's Breakfast.
I also made a tea reservation for 7 in the first call