Comfort and Convenience
Preferred cabin temperature is personal. What one occupant finds pleasant another finds stuffy, and the same setting reads differently depending on season and clothing, so agreeing on it early saves repeated fiddling later in the journey.
Safety and Driver Assistance
Before setting off it is worth spending a moment locating the basics, among them lights, wipers, mirrors and demisting. Working them out while stationary leaves fewer things to puzzle over later, when conditions allow less time for searching.
Multimedia and Connectivity
On a long day a phone's remaining battery often matters more than the playlist, because navigation drains it steadily. Where charging is provided on board, knowing where the cable lives keeps it a background detail rather than a distraction.