A lot of things they can do while you're there waiting. But say installing a new hard drive and then transferring all your software you would probably have to leave it for a day or so. I did. They're really fast and answer all your questions.
Most times yes. If your problem resolution calls for reloading software, it will save time and work for you if you bring copies of your software licenses.
Usually. Depends how bad a pro lemme you have.
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