ok, i have the map in front of me.
the campsite i mentioned is just north of Kramolin, about 20km east/southeast of Trebic.
the border crossing directly north of Vienna, place called Hate. there is a big duty free complex/theme park, there is an airliner thats now a cafe......we parked under the wing just because we could. again, its a bit bizzare.
(lots of brothels/lap dancing bars along this road aswell).
just west of Znojmo is a big cycling area(lots of cyclists in Czech), loads of pensions/hotels, and some vineyards.
on my map I have highlighted the road between Jemnice heading west to Stare Mesto pod Landstejnem, and from Cimer west to Lasenice.
we stopped in Ceske Budejovice for lunch, nice big square in the city centre, less than £10 for 2 pizzas and 2 cokes.....
i have also highlighted the road from Vimperk heading north west to Susice, and from Uherske Hradiste south east to Stary Hrozenkov.
i got a rear puncture in Slovakia somewhere, and managed to sort it out with my basic german, people are very friendly and helpfull.
hope this helps.