I went to Hungary 2 years ago.
From Llydd the first stop was Koblenz who can deal with immigration into Germany (also they have a nice restaurant, fuel and are very GA friendly).
Then Karlovy Vary (great hotel near the airfield) then Beckescaba.
SkyDemon allowed us to create a routing that avoided any permissions as sometimes these aren't forthcoming so you have to avoid them anyway. Best to plan this way in the first place and then cut corners if you get permission.
We filed flightplans using SkyDemon and all these airfields had free WiFi for weather NOTAMS and flight plan filing.