This is from my trip last August (2002) but I thought with the $20.03 rate coming out again people would like to know. I can't say anything about the bus or the service because I had a car. This is the schedule from the front desk, althoug I think there is a post further down from someone who actually used the system.
Bus schedule for Courtyard at Downtown Disney.
Animal Kingdom: Begins one hour prior to park opening with continuous service every 30 minutes until 11:00 am. 11:00 am -4:00pm service every hour; 4:00pm to park closing every 30 minutes. RETURN FROM AK: 40 minutes past the hour until 3:00pm; after 3:00pm every 30 minutes (i.e. 3:00, 3:30, 4:00 etc)
Magic Kingdom and MGM/Studios: Begins one hour prior to park opening and continues every 30 minutes (i.e. 8:00, 8:30, 9:00, etc) RETURN: quarter hour after each hour and quarter till each hour (6:15, 6:45, &;15, 7:45, etc.) Service continues until 2 hours after park closing
EPCOT: begins at 8:00 am with service every 30 minutes; return: quarter hour after each hour and quarter till each hour (9:15, 9:30, 9:45, ETC) Service continues until 2 hours after park closing
Pleasure Island: Runs 6:00PM - 3:00AM every 30 minutes
Water Parks: Blizzard Beach & Typhoon Lagoon: Departs: 8:45, 9:45 and 1:45 from hotel; RETURNS: BB: 2:15, 5:15, 7:15pm; TL: 2:30pm, 5:30pm, 7:45pm
Bus schedule for Courtyard at Downtown Disney.
Animal Kingdom: Begins one hour prior to park opening with continuous service every 30 minutes until 11:00 am. 11:00 am -4:00pm service every hour; 4:00pm to park closing every 30 minutes. RETURN FROM AK: 40 minutes past the hour until 3:00pm; after 3:00pm every 30 minutes (i.e. 3:00, 3:30, 4:00 etc)
Magic Kingdom and MGM/Studios: Begins one hour prior to park opening and continues every 30 minutes (i.e. 8:00, 8:30, 9:00, etc) RETURN: quarter hour after each hour and quarter till each hour (6:15, 6:45, &;15, 7:45, etc.) Service continues until 2 hours after park closing
EPCOT: begins at 8:00 am with service every 30 minutes; return: quarter hour after each hour and quarter till each hour (9:15, 9:30, 9:45, ETC) Service continues until 2 hours after park closing
Pleasure Island: Runs 6:00PM - 3:00AM every 30 minutes
Water Parks: Blizzard Beach & Typhoon Lagoon: Departs: 8:45, 9:45 and 1:45 from hotel; RETURNS: BB: 2:15, 5:15, 7:15pm; TL: 2:30pm, 5:30pm, 7:45pm