NTA - very unfortunate, but ultimately necessary.
NTA. Perhaps not the best response, but in the end you chose what trip you wanted to go on the most. Everyone will have a good time, and hopefully there will be other opportunities.
I think a third party would help at this point. Someone like a therapist or a priest who can help explain both sides and present the best options.
NTA. You can certainly apologize for losing it, but in the end it is your choice, not hers.
Sounds like you need to have a discussion with your parents and further explain your side of who you believe is capable of watching your daughter.
In the end, it's not their call; it's yours.
NTA for wanting the wedding when you want it instead of when your dad does, but IMO definitely the AH for using your dad's insistance as your financial gain. You basically bribed your father.
If he wants to invite friends and family to a date where a wedding will not occur, that's on him to explain. You only have to explain what you and your future husband plan to do.
No matter what you do, it is entirely your choice, not hers. Don't allow her or anyone else persuade you otherwise.
NTA for telling her how you feel. However, there will be times in your life where you will do things for other people even though you don't want to. If you're willing to do crazy things for best friends (at 16 I suspect you've probably done it at least once by now), then there should no harm in taking your mom's arm and walk her down the aisle purely for her benefit, even if you personally think you may be asked to do it again later.
No. Absolutely not!
You have a family, and they take precedence. She deserves to have the wedding she wants, and you deserve to be able to say no if you can't make it, no matter what the reason.
Yes and no. You should apologize for the outburst. There are so many levels to autism, so it is hard to give advice on that part, but if you believe that she is doing that on purpose, then you will need to understand what you will build a wall with the rest of your family.
Maybe not complete AH but very uncool and unnecessary. I can see why she's not talking to you.
In this scenario, I see you now as a boss and your wife and the housekeeper as your servants because you get the benefit of a completely clean house just because you can afford it.
Might work out for you financially but unless you enjoy snuggling up to your money every night I suggest you find a more reasonable solution.