Hi Alan,
It's great to hear that you are still taking advantage of your camper!
Go Visit Donegal has some information on the Aire de Service facilities in County Donegal, please have a look at their information. There is one in Buncrana near the Tourist Office and one in Carndonagh behind The Diamond.
Total Motorhome Ireland also has some information on places to stay and dispose of grey and black waste, there are several listed for County Donegal, please check availability in the more off-season times.
Hopefully, some of our members and industry partners can add to this list of places.
What have you managed to see during your recent trip into County Donegal?
Martin