I like juice. What I don't like is the sugar content in most store bought juices.
Luckily for me, I have learned the art of buying sweet watermelon!
Tap on it with four fingers together (like when you're burping a baby but lightly as if for the first time).... if it sounds hollow (like nothing is in there) it is ready and most likely, sweet!
Take it home.... refrigerate it and then cut it up. If you only have one fridge like us, chop it up, put in some ice (just water, zero calories), and nosh it up in your blender (or if superior like us, your Vita Mix!).
Fruit juice WITHOUT any sugar besides what's already in the watermelon. Miam!