These are the addresses that I have. I think I got them from a "Save The Adventurer's Club" thread:
Mr. Robert Iger
Chief Executive Officer
The Walt Disney Company
500 South Buena Vista Street
Burbank, CA 91521-4873
Mr. James A. Rasulo
Chairman
Walt Disney Parks & Resorts
500 South Buena Vista Street
Burbank, CA 91521-4873
Meg Crofton
President
The Walt Disney World Resort
PO Box 10040
Lake Buena Vista, FL 32830
Al Weiss
President
Worldwide Operations
Walt Disney Parks and Resorts
PO Box 10000
Lake Buena Vista, FL 32830
Walt Disney World Guest Communications
PO Box 10040
Lake Buena Vista, FL 32830-0040