we did a large golf event at the lake buena vista course back in 2000 during a family reunion vacation with our group of 20, we did the 18 hole course, they set up tournaments for us as a group & lunch.
the guys are planning on doing the bay lake fishing excursion next march during our wdw wedding, so i dont have any experience yet but what they want to do is the 10am 2 hour fishing excursion from the gf which is $225 for the group of 5 guys which includes the boat rental, driver, equipment/gear, photo & refreshments. check out disneyworld.go.com for more info.