1. Watermelon juice can be added with milk, ice cream and sprite, but honey is not allowed. Watermelon juice is generally sweet to drink, because of its high sugar content, there is no need to add sweeteners. If it's not sweet, you can add some sugar.

Watermelon is one of the most nutritious, purest and safest drinks. It has the effects of promoting fluid production, relieving restlessness, quenching thirst, relieving summer heat, clearing away lung-heat and regulating stomach, promoting diuresis, helping digestion and promoting metabolism. It is a nourishing food and drink, and is suitable for people with hypertension, hepatitis, nephritis, pyelonephritis, jaundice, cholecystitis, edema, heatstroke, fever, sweating and thirst.

3. No, watermelon and honey should not be eaten together, because both watermelon and honey have the effect of relaxing bowels, and eating together may cause gastrointestinal symptoms such as diarrhea. In addition, watermelon is rich in vitamin C. When it meets honey, it will accelerate the oxidation of vitamin C and lose the utilization of original nutrients. So, don't add honey to watermelon juice.