When flying in a cross wind the plane flies no differently than it does in any other wind or no wind at all. But just at the moment the plane is about to touch the ground you certainly want to use the rudder to straighten the path of the plane relative to the ground, otherwise the wheels will hit the ground with a sideways component. If there is any positive roll coupling you might need a brief shot of opposite aileron at the same time. Model or full size makes no difference, except that you might get away with not doing it with a model, whereas a full size will be damaged if you don't straighten with respect to the runway.

Jim