No you don't have make and appointment. But get to the office at least and hour early and you'll probably be first in line. Then take a number and wait. They do take people with appointment first. Or you can sign up on line for you social security.
No you don't.You can start the application process online at https://www.ssa.gov/benefits/retirement/
Just like the DMV, you draw a number and wait. But it is better to come early, like an hour and half before opening. I'd find a book and a hot beverage and stand in line. Good luck.
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