When my MBP needed a logic board replacement, my local Apple authorized shop turned it around in about a week.
The Apple Store in my area (20 miles from where I live) required an appointment scheduled on the web, for which the earliest day available was four days away with what I can only expect a longer turnaround time on the actual repair.
7 or 8 years ago, I used to be able to bring a repair into the Apple Store and get same day service on most issues. It's not the case anymore. They ship almost everything off to the depot now because of their high customer volume as a retail store. Plus, their staff isn't as knowledgeable anymore. So, I'll drive only 2 miles and drop my machine off at the mom and pop store and give them the business. I also bought my last two Apple machines from them. I rather support local business and keep the taxes in my community if possible.