Sidmouth has accommodation. Most of it booked from year to year but there are cancellations and you might put yourself on a waiting list in more than one hotel/B&B. It is a gamble but a sensible one.

As for driving in the correct side of the road, it is a doddle - just ask 30 million drivers here.

I did the switch in Ontario and Toronto. It takes concentration, but you get into it. The laws of the road are a bit different. We have traffic islands/roundabouts which Canada seemed to be devoid of, except Niagra. Think: give way to cars on the right, they won't stop and expect everyone to scatter. Speed limits are ignored generally, as are pedestrians. Perhaps I exaggerate but there are enough idiots to be wary, especially in cities. Which I gather is general the world over.

I always remember Thailand, being driven from the airport and wandering the street to tire myself of jet lag. Only when I crossed at a major junction and encountered a taxi going the wrong way on a dual carriageway (to a central taxi rank) did I look round and realise they too drive on the correct side of the road. It never occurred to me until then!

for a good source of folk venues and links to similar listing site in the UK have a ferret around cresby.com