Make the vinaigrette and shake well until combined
Assemble all the fruits and cucumber on the serving platter. Spread the cheese as cubes or crumble. Drizzle the vinaigrette evenly. Do not stir if possible as this will bruise the fruit and the juices from it starts collecting in the platter.
Serve the watermelon salad immediately before the fruit looses its firmness.
Video
Notes
Buy seedless watermelon to make life easy.
Do not make the watermelon salad in advance. You don't want the watermelon juice to come out as it sits. If u really need to then cut and keep the watermelon separately and mix just before serving. This way you can remove the juice collected before mixing with the vinaigrette.