I've spent a lot of time in Japan where they also don't tip and drive on the wrong side of the road.
When there, I always feel like getting into the wrong side of the car. One thing really confusing was that my brother in law once had an American Chevrolet minivan with the steering wheel on the left side (that is really rare in Japan).
I've never driven there. With the public transit, and family to drive me I haven't needed to (plus I was scared).
I'll probably drive when I go to the UK someday. At least I can speak English if I have an accident.