Here's a refreshing and lightly sweet mock-tail that can be enjoyed any time of the day.
Have you tried cold pressed watermelon juice? It's like popping a straw into a watermelon but much less work. I used WTR MLN WTR brand (Beyonce is an investor!). It's great right out of the bottle but I mixed mine with some lime flavored seltzer and added lots of ice and a wedge of lemon (I didn't have any limes).