Congrats on your upcoming wedding! To quote the Birnbaum's Unofficial Guide 2005:
"By Train: Amtrak serves the Orlando area twice daily from New York, with various stops made along the way. The trip takes approximately 22 hours and costs from about $130-$350 round-trip, coach."
The guide also offers a phone number, and the website
www.amtrak.com, but also states that you can call a travel agent. If you decide to go with a travel agent, remember that Pam at Kingdom Konsultants does a fantastic job, and is a regular on this board!
I was just rereading my guide book, saw this, so I thought I would post in your thread! Hope you have a wonderful wedding and a great time at WDW for your honeymoon! (I wanted to go to WDW for my honeymoon, but my DH didn't want to. We did visit Disneyland though...while we were out west!)