I bought the tickets thru Maple Leaf and they were only $9 more, total, than Touring Plans was saying Boardwalk would charge. Also, the tickets say they are
3-Day Theme Park Base Ticket +1 FUN Visit
with the "Fun" visit a water park admission. I'm wondering if this is the same as being able to go to the water park on arrival day, or if it'll be valid whenever we want to use it (which would be awesome... we arrive at MCO at 6pm so arrival day admission is useless for us).