You can also go fishing out at Port Orleans Riverside. Cane pole fishing is relatively cheap off the dock out there. They stock the river, so the fishing is supposed to be pretty good.
My son LOVES Sci Fi Drive in (my daughter does too - girls tending to be a little more adaptable to "boy stuff" than boys are to "girl stuff.")
We've done the pirate cruises from Y&BC and from Grand Floridian. I think they age out fairly quickly (my son loved it at five, and was almost too old at seven already). They are expensive, but a lot of fun.
There are a BUNCH of rides that are much more "boyish" than "girlish" - Test Track and Dinosaur and Buzz Lightyear and those stupid cars in Tomorrowland (my son loves them - we avoid them).
For older kids of both genders, there is horseback riding out of Ft. Wilderness - its easy trail rides, nothing challenging. There is also a nine hole fairly easy golf course. Plus two minigolf courses. Mouseboats.