Most spring, cable, and roller jobs on a 1970s-era door run one visit, same day, once we're on site - the parts are common enough that the truck carries them. Opener repairs can go the same way if the motor and logic board are standard units, which most are.
What slows things down out here isn't the town, it's the door. If the track has been bent from age or a past impact and the replacement section isn't a stock width, that piece has to be ordered, and that can add a day or two. We won't quote a same-day fix on something we haven't seen - a door that's been sagging for years sometimes has more wrong with it than the one obvious symptom, and we'd rather tell you that on-site than guess over the phone.