Best, and most recent, answer I could find for you:

In-room, high speed Internet access is being rolled out at select Walt Disney World Resort hotels. Access already has been added at Disney's Coronado Springs Resort and will be phased in at other select hotels across property through April 2004. Guests will be charged $9.95 for 24 continuous hours of high-speed connectivity, and technical support is available 24 hours a day.

In addition, Wi-Fi is now available to guests staying at select Disney Resorts. For a charge of $4.99 for the first 60 minutes or $9.95 for 24 continuous hours, clients with Wi-Fi enabled laptop computers or PDAs can access the Internet from the common areas, including poolside, at Disney's Contemporary Resort, Disney's Coronado Springs Resort, Disney's Grand Floridian Resort & Spa, and Disney's Yacht & Beach Club Resort. Wireless interface cards (WIC) are available for purchase in resort business centers.

All Walt Disney World-owned and -operated resorts currently support mobile computing through dial-up dataport connections on the guest room telephones, with applicable telephone charges.