What about people who would only want to go if they knew they could upgrade at a certain price? That's where we were at. My wife and I were thinking about going but don't want to pay full price for a day, but we're also nervous about buying and booking a single day ticket with basically no information on what the upgrade options are. For us, we're just waiting it out, but I could see a bunch of people buying single day tickets because they were told they could upgrade and then being disappointed at the upgrade prices, or blackout calendar, or benefits options, or whatever. At that point, you basically have a bunch of people who bought single day tickets who otherwise wouldn't have bought them because they expected it to be a down payment on a pass they no longer want.