All Mac and Mac Accessories repairs are done in-store.  The exception is iPhones. Depending on the issue with your iPhone depends if it is done in-store or sent off for repair. For example, if your phone has a cracked screen, this would need to be sent off site so that it can be calibrated correctly with a special machine.  If however,  your phone has an issue with a speaker or receiver, it may be done in-store if a modular part is available for your particular iPhone model.