So what's in Derby?

Dave has a weekend at the same time as me, so I'm taking Monday off, and once he gets home Saturday morning (and maybe gets an hour or so's sleep), we're off to Derby. The main plan is to use that as a base for walking in the Peaks on Sunday, but there's Saturday afternoon and Monday morning to do things with, a few meals out to have, and of course it may rain on Sunday.
We're staying at the Hampton, so that's safe, predictable, and nice.
What should we do, see, or avoid?

Cooking sorted

 Proto-soup blended by means of three batches in the baby processor (first batch was immediately microwaved hot and eaten).

The lamb curry kit that claimed 10 min on the outside of the pack and 1 1/2 hours on the inside has been cooked, slowly, and may get eaten tomorrow.

I've cooked "real" Chinese for the first time in years - chicken and mushroom. Note to husband - no, "rice wine or dry sherry" does not mean Harveys Bristol Cream, nor does it mean rice wine vinegar. That bottle of cheap saki that's been sitting at the back of the cupboard for ten years though - yes.

Further note - if, on looking at a Chinese meal, one thinks "not much greenery in that", one can do a quick pseudo-Chinese veg dish by chopping some lettuce, pouring boiling water over it, and giving it 2 min in the microwave. Chinese leaf would be better, but lettuce will do at a pinch.

Shrinkage has occurred

 Work trousers have, again, gone from "only if I don't breath" and through "bit baggy round the thighs"  to "how do I stop them falling down?" So, time to go through the wardrobe and see what I can now get into.

Sadly, no new trousers appeared, but I should have checked the dresses and skirts sooner. A rather nice dress, last seen in "don't breath" mode, is now threatening to slip off both shoulders at once, and can only be worn if I put a camisole under it - not something I'm included to do when it's this hot. Also, I have more smart black skirts than I know what to do with, and I don't wear black in summer.