here's some info:
Specialty Cruises are offered by some of the WDW Resorts.
Book Specialty Cruises 90 days in advance. There's a 24-hour cancellation policy and a credit card is required to book it. The boat can accommodate up to 12 guests (10 adults and 2 children) or 10 adults. The resorts participating are: Grand Floridian, Contemporary, Fort Wilderness, Wilderness Lodge, Polynesian, and Yacht and Beach Clubs. Specialty cruises are also available from the Downtown Disney Marketplace. Hours vary -- standard trip lasts 50 minutes. Prices vary depending on the party size, food, and decorations. To book a cruise, call (407) WDW-PLAY/(407) 939-7529.
VIP Cruises are available on the Grand1, a 45-foot Sea Ray 450 Express Bridge yacht, offering private dining, butler service, and a captain. Cruises are for 1-13 people, starting at $375.58 per hour, with a one-hour minimum. Call 407-824-2682 for information/reservations. 24-hour cancellation notice required or you will be charged in full.
Fireworks Cruises for IllumiNations and Wishes are offered through Disney's Yacht Club Marina and the Magic Kingdom resort marinas. To book a fireworks cruise, call (407) WDW-PLAY/(407) 939-7529.
Birthday/Celebration Cruise -- Cruise for an hour on the lake and enjoy VIP fireworks viewing. Price: $211.26 for 21' Pontoon or $258.21 for the 25' Pontoon with Audio ($220 or $275 with tax) (price admits up to 10 if group is made up of all adults, 12 if group is a mix of children and adults) Hours: Departs 30 minutes prior to IllumiNations at Epcot or 30 minutes prior to Wishes at the Magic Kingdom. (NOTE: This is a slightly different cruise than the Fireworks cruises listed above.)