It will work OK when you get it back.
The point to watch for is whether it's the same machine, or a new one. If it's the same one, make a careful note of the date etc, because you may be back to them again in six to nine months' time for the same repair again.
Some folks who shouted loud about their new laptop not being supposed to do that have received a brand new, later (upspec) model in replacement. My friends don't shout like that, and have had their old machine repaired. Time will tell.