So I can bring 350 cans and plastic bottles per day, get my money from machine same day? Can I use my own black trash bags?

Yes you get money right then and there. I've brought twice that and never had a problem cashing out. When you hit there "limit" the machine prints you out a ticket

Yes u can bring more than 350 right as many as u got within reason long lines thou

I took more in than 350.

Yes