Can you stop putting her on a pedestal first? You are trying REALLY hard to convince us she is a good person, that she loves you, that she is not what she did and etc. Reality check. She is a cheater. Unless my dictionary is obsolete. Last I heard cheaters are not good people. Cheaters do not love the person they cheat on. Cheaters are cheaters because they cheated. You trying to sell me a car or something?
So much excuses for her. So much putting her in a good light. It is not us that wants to reconcile with her. It is you. And this is what the site is about. Whether she is worth it. All I've read is that no she is not because if she was, you wouldn't be here pinning the blame on yourself because a true R worthy candidate will shut that shit down pronto.
You are already dead set on R regardless of what she did or did not do. That is called controlling the outcome. The things you will lose to force the outcome is unfathomable. It is like betting on only 1 number in a roulette. You can be a trillionaire and still lose it all. That is how bad forcing an outcome is. In this case you risk your kids happiness to have a façade of a complete home. The resentment in the air of her towards you. Her feeling trapped and taking it out on the kids. You being unhappy and neglecting them in a dead marriage. These are all very very real examples of how forcing an outcome or controlling the outcome will do.
So to answer your 4 questions.
1. You are not dumb so stop acting like you are.
You were so bothered by the PA before and now you said it does not bother you as much as the EA. Stop lying to us and stop lying to yourself. That is why you wanted the poly in the first place is it not? Do not play us for fools. Your cheating wife is way smarter than that so trying to play games here will just make her manipulate you easier. Holes and indecisiveness like this shows that you have not set boundaries for her or yourself. This means that she can push it around as much as she likes because you allow it.
"He said PA is fine, I'll admit to it but not to the acts. Oof, he said unprotected may not be ok thought so lets leave that out for now." See what I mean?
2. This is a dirty game where the dirtier person that is most willing to throw away the marriage wins. So being noble and giving ground is dumb. If you want to fix your marriage you need to first be willing to throw it away. Being able to walk away in of itself is a trait that makes a person worth FIGHTING for. Not to mention that qualities the man/woman should have in the first place to be able to walk away. Qualities such as principle, discipline, boundaries, self-value, confidence, empathy and sympathy FOR YOURSELF as well as others, pride, self-respect. It is a myriad of qualities that can allow a person to walk away and those qualities make their partner want to fight for them. You are in reconciliation sub before determining she is worth it. That tells a lot by itself.
3. Nothing on the anniversary. It is a day to remember the vows you took. Which she broke. Why are you celebrating that. Celebrate her breaking of her vows? Of her stepping out? Common sense. Nothing to celebrate. Communicate that to her. Be firm.
"No, I will not celebrate a broken marriage. I am not over the affair because I have not gotten the truth. Until YOU fix it and fix us, there is nothing to celebrate. I will be responsive to your actions to save the marriage but if there is nothing to respond to then I have my decision made for me." Tell yourself something along the lines of that to determine your action.
4. What to do? 180. It has been 3 years. It is time to build yourself into someone good enough to walk away. Grey rock until the poly is done then start communicating depending on the outcome. If it was a PA, what would you do. If it was only an EA what would you do. You cannot come to an answer with her manipulating you so you need to grey rock the hell out of her so you can come to a decision. 180 until you come to an answer. She will be frustrated. You will be tempted. Like I said, quality of being a person worth fighting for because you CAN walk away.
During the 180, build a life without her. Friends, families, kids, activities, job opportunities, hobbies. You said you had no one nearby or something. Make friends or go to therapy. Many things you can do to amend that. Build a fulfilling life. Make your life so good that you are happy by yourself. I believe that no one should live through life not being able to love or being loved. I myself will not accept dying alone. You are in your early 30s. You CAN find another. Especially where you are from where divorce is not so much a stigma. Hook up culture is a thing and etc. There are bars to pick up and talk to other people.
She can either fix the marriage or she wont. Either way you CAN make it so that you will be fucking fine without her.