shhhh. Don't tell anyone I told you.....
Do a bit of research. Find out the REAL LIFE name of a higher up executive at Disney World. This could be found on the internet or on a press release, etc.
Write (email) or call that person's SECRETARY. (Ask to be transferred from Guest Services but you need to have that secretaries' name first or say, "Can I speak with Mr. Jones' secretary, please).... Be nice. Be overwrought with disappointment. "I'm not sure you can help, but I am so sad at not having gotten a reservation....."
Explain how it is your honeymoon, etc. Stress the MAGIC of Disney. How it was appalling that for profit individuals were pre-booking all the PS for Cindy's Castle. Ask very nicely if there is anything they can do for you.
p.s. It worked for me! I got a breakfast PS because I was open to several choices of days.
"Miraculously, they had a cancellation."
Good luck!