Run away from this "marriage" ! This is beyond abnormal behavior. I would go to the police for the violence and threats, then I would immediately hire a divorce attorney. Yes, you will be obligated under the I-864 if his Green Card has been approved, but that might be the least of your worries. His immigration path is his responsibility.
Your questions are not dumb.
My opinion:
1. I-751 instructions do not require a marriage certificate. We didn't include it.
2. You should include evidence from date of marriage to present.
3. None. I submitted no personal affidavits as they carry little weight. I would not collect more. Actual documentation created during a normal marriage is far better evidence. Think quality......Good luck. The next step (citizenship) is far easier, imo.
My wife registered within 10 minutes after receiving her Naturalization Certificate. They had kiosks from all the surrounding counties there at her ceremony.
Exactly. Here at DFW, all direct international travelers are in a restricted area until after they have cleared immigration, customs, secondary, and picked up their baggage. Even the baggage area is restricted.
No. Green Cards are normally surrendered at the oath ceremony. I have heard of it happening only one time. If the officer asks you to surrender it, just say you need it for travel. It should not be a problem.
BTW, I'll be 73 in a few months...LOL.