Do they even do anything in store anymore? When I bring it in they usually scratch their head, wipe the device, and try and charge me $450 to have the laptop mailed to a facility where it will have its logic board swapped out.
Just $450? Pfft. 10 years back I had an issue with an overheating MacBook Pro (within warranty) and because they couldn't reproduce it with their tests they offered a replacement board for about 850€ (parts only). Turns out changing the thermal paste (by myself) solved the issue completely.