Rich

Bummer.

If you go early in the season next year, keep the entry ticket as it remains valid for the remainder of the year.  Well worth a couple of visits.

It's the kind of place that's worth visiting once. I'm not sure I'd go back again. Nice novelty though. Given where you are, you're also just as close to The Heights of Abraham too, which are also well worth the visit (at Matlock Bath, just don't go at the weekend).