We stayed in a deluxe room in tower 6 and the only difference from our room in tower 5 was granite countertops. Our room also had WIFI.
They also have a little activities counter in tower 6, so you can get your minigolf, board games and other supplies there and not have to walk to the main center at the other end of the resort. There is also a small activities room with a pool tables, some Wii's and a workout gym.
Also, tower 6 does have a bell station, and the man there got a cart for me and helped me move our stuff up to our room. He also suggested parking in the parking garage, which has a side entrance to tower 6 so you don't have to go outside.