I think to add to the travel/comfort one - there's possibly also some advantage to doing all your matchday prep in a familiar environment where you spend a lot of time. I know from playing hockey as a student I felt much more calm and loose getting ready, warming up etc at our "home" facilities (where we'd train every week and play every other week) than doing the same at some other location (which we might only visit once a year). Something about the foreign surroundings can put you a little on edge or distract you.

Maybe the difference is minimal and melts away after the first ~15 minutes when you get into the game, but you can yourself into quite a big hole in the first 15 minutes (https://www.youtube.com/watch?v=KRx3KrQ83mc)