They are through the Sammy Duval Watersports operation at the Contemporary... here is the info for you on them
For the first time on Walt Disney property, personal watercrafts are avalaible to ride. We offer two types of excursions which leave port from the Contemporary Resort. First, a morning guided tour that can provide ample photo opportunites and a natural Florida view of Bay Lake and Seven Seas lagoon. Next a Free Ride that allows you to really cut loose in our bouy area or race for time in our course challenge
Personal Watercraft Excursions - Starting at $65.00 plus tax for 30 minutes/$140 plus tax for 60 minutes
Guided Excursion - Guided excursions departing from Disney's Contemporary Resort daily at 9:00am. Guest's are guided (by a SDWSC PWC specialist) around Bay Lake & Seven Seas Lagoon, pausing along the way to view "Points of Interest". At the conclusion of the excursion guests are given time to "Free Ride" under the supervision of the guides. A maximum of 4 rental units carrying up to 3 people each, will operate during each excursion. Price is $100.00 plus tax per hour per rental
Free Ride- Rentals departing from Disney's Contemporary Resort at 10:00am, 11:00am, 12:00, 1:00pm, 2:00pm 3:00pm and 4:00pm. Rentals operate in a "buoyed off" area on the north shore of Bay Lake (reserved for the Sammy Duvall Watersports operation), under the continual supervision of Sammy Duvall Watersports Guides. A maximum of 4 rental units will operate during each session. Price is $65.00 plus tax per 30 minute rental pr $100 plus tax per 60 minute rental.