Keyboard language option during purchase process

I'm getting ready to buy a new MacBook Air M4 online, and it's for a friend that will be moving back home to Latvia in a few months. I see they offer a keyboard language option when purchasing. It's been my understanding that keyboard language can be chosen during initial macOS setup. If I select a language during purchase, does this mean the keyboard may be physically different (special characters, etc)? Or is it just in the software? Thanks!