Very glad you enjoyed your foray into (nearly) my neck of the woods, waterhouse. I bought Swaledale shearlings at KS one year and we bought mule ewe lambs at Lazonby last year. I love our smaller traditional marts - you simply don't get that atmosphere at the newer, bigger ones.
The people up here are warm and friendly, yes. They are in Exmoor too, and South and West Wales, so I don't think it's a north/south thing, perhaps more of an agricultural / non-agricultural thing?
(I hasten to add I am not saying that mid-Wales or North Wales are not friendly, but I don't have personal experience of those regions.)