'Ats off to 'Eck - I don't think I've ever seen a comparable construction.
I genuinely didn't think I'd be able to solve this one, but here we are, day 8, and I think I have. Tough grid fill, generally clear instructions after a solid day of confusion extracting the first 9 word set of instructions. I can't even remember the clues in honesty, it seems such a long time ago I was solving them.
I feel worried because I don't know which instruction would have been helped by the title - I think I've followed them all but haven't used it. We shall see.
A unique puzzle - thanks, 'Eck.