I suppose we're about as alternative as Disneyland Paris 
Yes, vinegar is usually worth a shot, I have a more hardcore thing bookmarked somewhere if that doesn't work but you have to be prepared to say goodbye to your item, wear mask, goggles, and gloves in a ventilated area type of hardcore solution.
Shoes, I'm useless on actual shoes shoes. Weejuns maybe? I hear they're comfy, and I like the look of the mule version but those probably are quite limited by weather, especially UK weather. We've got a bit of an Indian summer going on here a lot of rain last night though, but days are sunny and relatively warm, 27 degrees predicted for next week and still 25 the week after 
In other news Zara has a Collab with Narcisco Rodriguez out today, archive pieces with very strong Carolyn Besette-Kenedy 90s minimalism vibes (she wore quite a bit of his clothes). Bit pricey, I like the red dress but not convinced it would get much wear (especially if the heating is going to be set to low everywhere, as minimal Aircon has already demonstrated to me this summer), maybe the jumper with the built in bra, I'll see if it shows up in store. I do love this era in fashion and it wasn't ever very mainstream but my body shape isn't the most compatible with it. (The shoes can get in the bin though, they feel really off).
Also of interest, FT piece on material innovation in fashion, it's almost as if they're lurking...