

Exempt employees are expected to get their work done, but the work does need to be reasonable. If they give you 40 hours of meetings you can have a good case they are asking too much to expect anything more. While hours are not given by law, there is still an expectation of reasonableness.
Which is to say they cannot fire you for not getting your work done. However at-will means they can let you go - but that is not firing you for cause and there is a big difference in how the law treats that.
Asking about the culture and work environment is what you are supposed to be doing when they ask “are there any questions”. I’ve never had a problem finding a job where I’m expected to work about 40 hours and go home. Once in a while they ask for extra work in an emergency, but that is rare and they have all made it up to me somehow.
The protection isn’t great I’ll agree, but it isn’t hard to find places that don’t treat you like that. Don’t work for the rest no matter how interesting the job is.