You will be able to replace your MacBook’s bottom case through a trio of options – first of all, you can always drop by your resident Apple Store by setting up an appointment at the Genius Bar to get the replacement, or perhaps you might want to head to the closest Apple Authorized Resellers in order to receive your free replacement.
If you’re feeling anti-social and would prefer to save fuel by staying at home, Apple also caters to this niche as you can always get your free replacement kit online, where it comprises of a new bottom case, screws, a Phillips head screwdriver, and the relevant instructions. Only 22 countries support this replacement program at the moment.