You only need the park ticket attached to book the FP online in advance of your stay. And people are obviously very interested in doing that. But you don't have to. The old bands from previous resort stays never had tickets attached. They all worked to book FPs at the kiosks. This is how it works right now. Maybe they'll change it. But since most people really like the option of booking in advance, they may not need to change it. Most people will just be linking the tickets. This reminds me of the old days when paper fast passes never expired. Officially, they had an expiration time. Unofficially, any cast member would tell you that you could bring that piece of paper back at any time, even years later -- and as long as you were entering the attraction *after* the window opening time printed on the ticket, it would expire. I learned that unwritten policy here on the DIS! That was years ago when the parks weren't so crowded and they could be laid back about such things.