How is tennis on a hard court different from tennis on grass or clay?
On hard courts & grass you have a fast bounce with the ball on grass bouncing lower. And the grass bounce may be a bit of a surprize due to unevenness of the surface. As far as running around is concerned, if you run to the point where you hit the ball on clay-as you would on a hard court-you will then slide on in the same direction; you need learn to slide to the point where you hit the ball. As to shoes, many hard court shoes will totally fill up with clay making the effort of a hard court player even more amusing, slipping & sliding around!