word of advice for anyone thinking of buying soda for the promo event
Dont
Instead, consider waiting a couple years for when all the rewards are gonna get put on the mogstation. And it'll probably be cheaper than however much mountain dew you would be pouring down the sink. Really, think about what you're missing? "Mountain Zu"? Think of your favorite mount, is some random zu any better? Zu is a regular enemy, you can go out and fight one anywhere, its not some Bajamut Blast or anything, the mount is just a fuckin regular green bird. If you don't participate in the promo then you aren't missing anything spectacular.
This has been a cynical XIV PSA