Yep park and ride schemes are great, have used them at several cities I have visited,whilst not expensive, they still cost and you still have to drive to and from the park and ride.
At rowntree that's something you don't have to do or consider, nor do you have to bunch up because the bus is full, as we found in both Oxford and Cambridge and waiting for the next bus that was just as full too.
I am a bit of a lazy git, but having a site so close to the city centre actually had me doing more walking around than i otherwise might do...