Rotation preserves the orientation. For example, if a polygon is traversed clockwise, its rotated image is likewise traversed clockwise. Rotation is isometry: a rotation preserves distances.

Do rotations never preserve orientation?

Reflection does not preserve orientation. Dilation (scaling), rotation and translation (shift) do preserve it.

Does rotation preserve congruence and orientation?

As in part (c), since rotations preserve orientation, no composition of rotations will show the congruence between \triangle ABC and \triangle PQR. Reflections are sufficient to exhibit this triangle congruence or any other congruence.