Sounds to me like you followed procedure. Here's what is currently on the web site.
Pool-Hopping Information for 2004
You and any Guests staying with you at Disney's Old Key West Resort, Disney's BoardWalk Villas, The Villas at Disney's Wilderness Lodge, and Disney's Beach Club Villas are permitted to use other Disney Vacation Club and Walt Disney World® Resort hotel pools (in addition to the resort hotel at which you are staying) if the resort hotel pools are not at capacity. If the pool you are visiting reaches capacity, you may be asked to leave in order to accommodate Guests of that resort hotel.
Please check with a Host/Hostess at the Front Desk of the resort hotel you wish to visit to find out about pool-access availability. You must present your Walt Disney World® Resort ID card with your "
DVC Member" designation on it to use the other pools. This offer is not available at Disney's Animal Kingdom Lodge and Disney's Yacht & Beach Club Resorts.
Resort hotel pools may become unavailable from time to time due to capacity limitations. Due to the high occupancy that is expected, Disney Vacation Club Members may not "pool hop" during the following dates*:
April 3 - 11, 2004
May 28 - 31, 2004
June 28 - July 4, 2004
November 22 - 28, 2004
December 18, 2004 - January 2, 2005
*Other restricted dates may be added based on projected pool capacity.