You will have a great time there. If they have the valve try-out rig working, then it would be well worth having a go on that. There are 2 types of MiniMats too, the 6V6 (which is what I have), and the EL84.
They have altogether too many great amps, I will have to go there again to pick out a main amp I think (I am leaning towards the 1224 mk II).
The speaker rig is great too.