I couldn't book my trip through the website. I had to go with a Disney Travel Agent. Part of the reason was that every time it came time to "checkout" I got an HTTP ERROR 500 message. I changed to firefox and to Chrome. Still the same thing! It also happened when making reservations. I can NOT get on my MYDISNEY acct to even see my reservations or confirmations. It is driving me nuts! Does anyone have any solutions. Is this happening to anyone else.