Owen, I guess the level of inconvenience depends on where you start from! The venue is a few minutes walk from the mainline railway station which is around 2.5 hours from either London or Edinburgh and tickets aren’t that expensive if booked well in advance. As others have pointed out there are several Park and Ride sites around York that would work for a day visit. York is a great city to visit too so you could make a weekend of it although best to stay some way outside the centre on a bus route if budget is limited.
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