I would personally stop at geisilwind. Always something going on at weekends ( bands, car shows, truck shows etc ). Everything you need on site, nature walk right behind site which I personally enjoy ( lots of birds of prey ) a theme park just down the rd and under the motorway into the village ( not much there really ). I can’t say about Erlangen as I’ve never been in. Geisilwind is a shift from Prague 4/4.5 hrs. If it was me I’d stop there then run in early Tuesday morning. Plenty of stopping places en route that have showers food beer etc. Choice is yours.
bitchumen:
Thanks for that info, do you have the address or is it signed from the Autoroute,
From memory it is situated in a town called Tennenlohe which is between Erlangen
and Nuremberg and was signed from the Autoroute.
Agree with what has been said about Geiselwind, which will obvously leave you a bit further from Prague,depends on how far you want to run on the Tues.Have a good trip and watch out for the bridges and tramwires 
Thanks for all the info, I now have a good idea about the area in which to spend Easter so I can have a think for a few day’s, at the moment a stop in D sounds good, unless the hotel comes back with a positive for letting me park there. Cheers and stay safe.
Thanks to all posts on this subject and especially Suedehead, I stopped as suggested at Erlangen Tennenlohe which was perfect for the 4 day wait, with the walks in the forest and a short bus ride into Nurenberg I was not bored,