I'd say it tastes like a watermelon martini...with a whole lot of spitting involved.

A friend used to do this, a loooong time ago, and I think I remember her cutting it in half and dipping out servings with an ice cream scoop into bowls and serving like a sorbet. I can't say that I partook, but it looked like lots of fun.

Sorry, don't know the vodka amount, but I do remember there was lots of juice puddled in those bowls and none went wasted...the juice, that is. I'm afraid I can't say that about the party guests. LOL