You know what's infinitely better than a carton of Tropicana? A carton of boozy Tropicana, of course. And if you've got $US10 and two days, Spike Your Juice's magic powder will make that happen. Dreams really do come true!
The process of getting from juice to happy juice is stupid simple: take a two-litre bottle of your favourite juice (recommended: grape, cranberry or pomegranate) with a minimum sugar content of 20g/serving and none of that unfiltered or artificial sweetener junk. Then pour in a Spike Your Juice packet (that $US10 will score you six of them), seal the bottle with the supplied airlock, and sit patiently.
I know, I know, you're worried it won't taste good. And it may not! But you can adjust the potency/dryness the potable with how long you leave the cap on. Besides, if you've got two litres of the stuff, you won't care about the taste by the time you hit the bottom.