There are so many things to do you'll be overwhelmed. A couple of things you shouldn't miss are Silver Dollar City, check their web site for happening while you are visiting, and Branson Landing/Old Town Branson. The new auto/farm equipment museum may be open by then too as a big attraction in the near future.
Ride the Ducks is a novel experience that takes you thru town out to Table Rock Lake for a float or down to Lake Taneycomo for a float. The vehicles are WWII era DUKWs Amphibious vehicles. The Branson Belle is a paddle wheel floating showboat that takes you onto Table Rock Lake and feeds you while entertaining you.
If you stay at the city owned CG on Lake Taneycomo there are rental boats at Scottys Trout dock and fishing floats on the Lake at the CG. The Lake is kept stocked with trout from the hatchery at Table Rock Dam.
Ron