Comfort and Convenience
Seating position is a personal preference: torso length, leg length and arm reach vary, so a setting that suits one driver feels wrong to another. That is why people adjust before setting off.
Safety and Driver Assistance
Before a long drive it helps to locate lights, wipers, demisters and hazard switches while parked. Familiarity means less searching later, when attention is better spent on the road ahead.
Multimedia and Connectivity
Phone battery is the practical issue on a long day out, since navigation drains it steadily. If a charging point is available, keeping the cable to hand matters more than the socket type.