No, they don't care it's just more junk and useless paperwork they have to deal with. You're 18, what could it possibly say, a couple other jobs and your HS? If they want to interview you they already looked it over.
not wrong at all, I have a legit job, my office is right next to the department manager's. They really don't appreciate a million pieces of literature. But maybe a restaurant is different, only very serious positions to fill, every resume goes through a quadruple scrutiny check. You can bring in an extra copy, but they will most likely just throw it away.
no one said you're walking in and giving a resume to the interviewer. you can either offer it to them or if they request it you then have it to give them. either way it's a lot better than not having one. so yes, you are wrong
yeah i would deffanatly bring one, if everything is going well and they dont ask for it then you wont even have to mention you have it with you. If everything is going well and they want a resume and you dont have it then your SOL