Re: First problem, right here ...
And that has been put in writing already. So yes, there is *knowing*, really.
Also, the agreement requires first and foremost the sign off of the 27 separate countries, which are still above the EC and the EP: each of them can veto the whole thing. So what they managed to agree on previously is not going to be suddenly transformed into something completely different.
https://www.independent.co.uk/news/world/europe/brexit-news-latest-eu-visa-free-travel-agreement-no-deal-passports-a8757901.html
Biting the hand that feeds IT
