A ten pm drink is fine if it’s in your window. The nice thing about IF is it’s flexible. If your window goes to ten pm and you fast from then to 16 hrs later (or whatever your fast length is), you’re golden.
Alcohol does break a fast and those calories count, but personally, the reason I stick with IF is that it’s forgiving and flexible. I don’t feel guilty if one day I only do 14 hrs when my normal is 20-23 hrs. It fits my life nicely and that’s what makes me continue almost effortlessly.
I don’t do obsessive, because it’s unhealthy for me personally. Tight window timing doesn’t matter (if you mean your eating window is sometimes shorter, and fasting time longer) but drinking late yes that can interfere. In more ways than one - body will process alcohol calories first. I like a drink on weekends but do an appertif before second meal.
If it’s not a weekly habit though, don’t worry just do your next day as usual. Nobody is perfect.
Nope. You can delay your fast break as long as you like (in respect to weight loss). Headover to r/fasting. A lot of them mix (24 hr +) water fasts with intermittent fasting.
As for the other IF benefits, I’m not sure.
First question is no. Longer is fine. There’s no laws.
Second one, booze has calories. If you’re out drinking at 10pm, you aren’t really on a diet. Those are unregulated calories at night . That’s the opposite of what we’re doing here. So that next day is a get right day. You can use fasting to put you back on a during-the-week routine after that, but you not only blow that day but also the next, because 16 hours from 10pm is 2pm the next day. So there’s no 16 to have gotten.
The last one, 10 minutes is no big deal. But making those 10 minutes a big deal, being very rigid, is how you get good at this. And being good at this is how you make this work. Building and honing discipline is how you become a good faster who understands all of the why’s of his/her situation.