Hi!
Here's the quote from mousesavers:
QOUTE "Convention Tickets
Unfortunately it's very difficult to get your hands on convention tickets, which are not sold at the gates. If you call the main Disney phone numbers or ask at the gates, the agents will deny these exist. Convention passes are ideal for really short visits. Among the special convention passes that are sold:
After 2:00 Ticket - valid at one park (you can't hop) and only good from 2:00 until closing
2-Day Park Hopper - includes one admission to Pleasure Island or DisneyQuest
3-Day Park Hopper - includes one admission to Pleasure Island or DisneyQuest
Be aware that unlike regular Park Hopper and Park Hopper PLUS passes that are sold at the gates, these convention passes do expire 10 days after first use, and they are also dated -- you must use them by a certain date.
I'm not currently aware of any outlet that regularly sells convention passes to the public , but if you will be part of a group or convention at Walt Disney World, or you know someone who is, be sure to ask about these passes. Also, you never know what a Google search of the Internet may turn up; try searching for the words "convention" and "walt disney world" and see what you find. " END QUOTE
I know it's a long shot, but it's worth a try, we really only have 2 full days and 4 people out of the six in our party are unlikely to return in the next few years - also, they're staying at Courtyard by Marriott
Philip