I drove a RHD car for a week in New Zealand, and it took a couple of days to adjust when I got home - I kept turning on the wipers when I meant to signal. Oddly, I didn't do the reverse when I started driving in New Zealand.
I just spent three weeks driving around New Zealand, and I wholeheartedly agree that was one of the hardest parts about driving a RH vehicle.
The hardest part is the wipers and directionals, they are swapped. You go to turn right and you turn the wipers on ... well that might be a problem just for some of us.
Now you guys know what us Kiwis have to deal with when we travel to most countries and hire cars.
I generally make one f..k up a trip ,normally it's when turning left at an intersection and NOT going to the far side of the road. No accidents caused......yet