Loads of nice places in Wales to stop for a weekend, I really like Abersoch. On the day your missus can even walk around the track and sit on the beach to while away the hours on the day
Getting to it is easy enough, takes about 20 minutes once your onto Craggy Island (it's bigger than you think). A5 takes you most of the way fairly quickly and then you follow a B-road for a few miles before getting to the track which is on the coast road. Everything at the track is wheelchair friendly, as far as I can remember.
My old Golf went well round there, it seems a small track, but it's much better with all the new additions for the GP - although Coastal is still my favourite layout due to the certain death!