This is an interesting one. Mainly because I think we all vary, in our bodies and our perspectives, and I can pretty much guarantee that what works for you will be different from what works for me.
I have never been a Cold Turkey kind of person. When I go from higher to lower ANYTHING, I do it progressively, to make the transition easier. coffee. calories. carbs. breaking in a new pair of shoes...
And I really dislike Absolute Thinking.
Works for other people, not me. I see is as just another way to fail at Perfectionism, and beat myself up. Can't be *****.
If someone says to me 'you will never taste chocolate again!' my instinctive reaction is to go out and buy half a ton of the stuff and enjoy every bite.
So I say to myself 'you can have choc every day, if you like. Do you want some today? If so, what are the consequences, and are they worth it?'
So, for your 'Cheat Day' I would prefer to call your food choices 'optional discrepencies', and then I would eat the food, test my blood glucose, assess how I felt after it, consider if those consequences were worth it, and then make a decision on whether to ever do it again. On my schedule.
If any of those food choices triggered food cravings, or a rampant desire to eat them again, immediately, then they would go straight to my Avoid List, and stay there.