Yes it is mini in the USA world of motor homes, although it is Canadian, or the business was when it was manufactured.
It is 24 foot long, so able to go anywhere a long wheelbase tranny van can go. We have taken it around the center of Paris (was lost) and many small mountain villages around the med.
We have done a few wild camping trips in the UK as well, and because the RV is a proper size (not enormous) we can park up just about anywhere. One time we parked up in the old disused road by Silbury Hill, and was joined by a convoy of new age travelers which was very entertaining. I think they appreciated that my fridge was full cold beers which we demolished lol.
No problems driving a left hooker in the UK; was in the army for 6 years and always posted overseas, and I have had a few yank motors over the years. It has pro and cons really, because when overtaking it is much easier to pull back in. With an RV the length is not the issue, it is the width that people find a problem along narrow roads, but being a HGV1 driver in my past I do not find it an issue.
This year we are planning a wild camping trip within the UK; either the west coast of Scotland, or from Portsmouth and along the SW coast towards Cornwall weather depending, but will take advantage of pub stop overs when possible.