This morning I finally found chef Mickey for my day, after I filled out the form and click submit button, the castle picture shows, then... "error code", I quickly go back and the reservation is gone. that's after 2 months of search. yucky!
If you haven't closed that browser you can try and hit the back button and see if you can get the screen it came up on originally..it worked for me once when I had a similar problem...worth a shot!