Sorry I am a bit slow to reply these days...

We didnt really do any hiking its all pretty flat although there are some lovely forested areas around. These countries are pretty friendly when it comes to campervans and camping and there are specific spots where its allowed with toilets and facilities which makes it great.

We had our own little camper. I dont know the cost of campers sorry.

If you do it in a camper then download the app "park4night" its great - has a map with all the places people have parked for the night with any comments. We used it every day!!