Hi Andy, sorry for english ...
and_y píše:
Hi,
Firstly, is it legal to drive off-road in Slovakia in general?
If not catch you, yes. (only joke

)
Generally - no.
and_y píše:
Then, am I allowed to sleep where I want? Eg. in my tent in a meadow?
In 1+2 level, yes.
(but your tent in 2.level not equal to your car in 2.level)
In slovakia exist 5 level's protection od nature.
1. general nature and landscape protection
2. CHKO (part of forest with higger level of protection)
3. nature Reserves
4 + 5 nation park's and National Nature Reserve
1. level is anywhere.
But, is different go by car example over local cross-country (between meadows and fields), and go by car into forrest.
A better case (in forest) - if you meet a hunting guard or forest guard, you must leave the forest without fine (punishment).
In the worst case - fine on the spot in cash.
Not a good idea to be rude, arrogant, aggressive.
It should be guilty, respectively. humble.
Good behavior may be unpunished. (And you see the shortest path from the forest.)
(Sir, I am a foreigner, I got lost.)
More info
https://translate.google.sk/translate?h ... podnikatel(slovak to polish translate)