Our family of 4 will be visiting for the first time from the US this May and with only a day in York and the need to plan a realistic itinerary, We'll be staying at the Bentley Guest House, about .6 mile walk from the Minster. I'd appreciate some input on approximately how long it would take to do the following, how you would prioritize the list, what order you would see things, etc.:
-Take a guided tour of the Minster (I'm assuming we'll want some more time afterwards for more pictures)
-Visit the Yorkshire Museum/St. Mary's Abbey (there's an optional combo ticket with the Minster starting in April)
-Walk through the Shambles (are any of the shops worth checking out and what are their opening and closing hours on a Saturday?)
-Visit the highlights of the National Rail Museum (I'm not really into trains but the free price makes it sound tempting, especially if you can enter some of them)
Anything you'd skip or other must-sees including at night like one of the ghost walk tours? If it makes a difference, our son and daughter are 21 and 19.
Thanks a lot for your advice.