I've always liked kombucha. Okay, not when I was a kid or before that because I hadn't tried it then.
But it's a good beverage.
The ones I have had only had a trace amount of alcohol in them, though; so little that I don't think you had to be over 21 to purchase them. That could have just been the variety that I had though.
Honestly if I'm drinking kombucha I'd rather have it be the one with the least amount of alcohol possible.