Turn off auto night shots when you see it in the bottom right corner. It over brightens a lot of pictures with the post processing.

Amazon has returns until January. If you are worried, buy now, don’t open till after cyber monday

For authenticator, there should be a QR code to help transfer codes over.

Some authenticator may have cloud saves

“Should” is one thing. “Would” is another.

This is in the realm of “infeasible”.