[It's inevitable at some point during this that she would trip in her haste to get to the ball before it hits the ground. Which Colette does, but at least she picks herself up easily enough and doesn't seem too hurt. It is just sand, after all. Generally, she has fun, laughing and grinning when she hits the ball back to him. This was just giving her a go to see what it was like. At least, with just the two of them. It means she doesn't have to worry about bumping into anyone else on her team, on her side of the net either.]

It's fun! The idea is simple enough to play. And if there's more people like in that game, you can spread out and cover more of the area on your side of the net.