Yes its recommended
Best to make appointment. Especially if you're thinking on going on the weekend.
Yes if you go with no appointment is foin to take longer
They dont accept appointments. I just tried. They said its first come first serve. For future reference. I spent 30 minutes on hold for them to tell me that.
You don't have to. I dropped my car off super early and it was ready in a few hours (both times). Have someone follow you.... Hop in with them, go chill, then have them drop you off before closing.
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