I'd do the following:- spend a lot of time on their website checking it out, when you get there pick up a catalogue and spend some time over a coffee checking it out (the website and the catalogue are not the same, there's lots more in the catalogue). Go equipped with a notebook and tick off what you really want to see, it's impossible to see everything in one visit, or else use this first visit to check everything out and not necessarily buy anything! Beware the self service area, there are small items there which are such good value that it's almost impossible not to impulse buy. The check out area was chaotic when I was there, not enough check-outs open and all sorts of delays because cards weren't scanning properly, so allow time. I'd recommend their restaurant for lunch.