Some argue that this is an attraction for kids... NO, it is a step back in time for me and an eye-opener for my American born wife. The Museum effectively recreates a Small rural town during significant periods over the past 150 years - not just passively but in actually functioning.
We went on a February day when it was bitterly cold & we'd had quite a bit of snow overnight. We'd bought our tickets in advance to avoid the queues, however the snow did that for us - the website told us they were delaying opening for an hour to clear the paths & make it safe.... they did a good job. When we got there, although a Saturday in the school ½-term... it was almost empty, so we loved that as we don't like crowds.
So, my time is limited for this review but I would say that the busses & trams mean that transport for the elderly is OK, though wheelchairs might be restricted..... there wasn't a great deal of accessibility in 1860; though the site is quite good (though not the mine). Kids will love the sweet-shop, adults will love the parts that tie in with their jobs. Going into the mine was excellent.
Best Bits: Good food, good loos, interesting. The staff were FABULOUS and really wanted to make our day (one poor guy... we were his first customers at 3:15pm because of the cold!)
Weaknesses.... maybe too much to try and "do" it all in a day. In the snow the picnic tables are not much use!
Tips: Buy a ticket on the web. Take a flask of hot tea.