In my experience it's better to go to an 'Authorized Service Provider' for repair. They have an incentive to do repairs and get paid, and it's quite easy for t

In my experience it's better to go to an 'Authorized Service Provider' for repair. They have an incentive to do repairs and get paid, and it's quite easy for them to get Apple to pay the repair cost. E.g. on my machine that had the Keyboard repeating issue I also received a topcase as there was some slight de-lamination. Seems your model was affected (at least nominally) by the same keyboard issue so just send it in for a repair of the keyboard and also note the other issues; they will likely be repaired for free.