Well, it certainly will be interesting to see if G+ buying patterns change now that you can't add it on to length of ticket. I suspect the average # of G+ users per day will go down, just because some people default into the ticket add on for convenience (i.e., not having to book it day-of and risk glitches etc.); habit (assume it is the same thing as FP+ which they liked), or uncertainty (i.e., they never used it before, and want to have it just in case). And of course, once people have it, they will use it because why wouldn't you. But if people have to buy it each day, they may realize on day 3 or 4 of their trip that they don't really need it and the sales will go down. If people do keep buying it at the same rates, it will prove me wrong that people are finding appropriate value in it. But if sales slide, I think that will be proof that people don't like it.