Are the seats in the 100s flat or like a movie theater? For concerts does anyone know if they are floor lights set up that would block any of the views?

They are stadium seating in seaction 100's. If you have floor seating it is folded chairs. There is a 3D stadium seating chart on the stadiums website.

Usually flat, at least what i saw. As for concerts/floor seats it depends on how the stage hands set up the stage.

Flat. Concerts are always different depends on how they set up the stage. Normally they have pics on the website of what the setup might look like

Yes all the seats in section 100 are stadium seating. If you are going to a concert and have floor seats it might be different