I just booked 3 nights using the kids stay, play and eat for free with the Disney Visa. I know there have been other threads on here about this offer, but I just wanted to let everyone know that you can do 3 nights. We already have a bounceback with FD starting 8/15 and one day base tickets. The offer doesn't state a minimum of nights; it just gives you an example for 4 nights. I called yesterday and that is what the CM told me. So today I called back and was crossing my fingers this was correct, and it was, so I booked it right away! This offer worked out better for us opposed to the room only discount. Hope this helps others! 
