Any advice for a new job

Any advice for a new job I'm starting a new job this week at a fast food place I haven't worked in one since I was younger and am really worried about them trying to make me take orders either on the headset or for the lobby. Not sure if I should put myself through the stress of trying and failing to take orders Infront of everyone or just tell them I don't want to take orders and I can do anything else. Any advice?