This must be something of a record: two posts in two days!
However, I saw that the list of exhibitors is on the Wonderwool Wales site. http://www.wonderwoolwales.co.uk/exhibitors-list.html. As you can see, it's a long list, with exhibitors coming from Wales, but also Scotland and England. A great opportunity to see so many together.
It's a large exhibition space and will certainly be a bustling place. The organizers provide a number of places for a coffee or lunch, and also benches for those who just want to catch their breath and contemplate their purchases. When I was there--can't remember if it was three or four years ago--I really enjoyed myself and thought this would be a good stop on a tour.
There are three places left on this tour. Only a maximum of 16 can come.