Camper Vans & Class Ber's only. How late is too late?

Kinda depends where the power cord was kept, for our MB Crusier it was outside rear storage, had to be open , cord unsecured, etc., so unless we intended to stay up and watch TV , we just parked and went to bed. In addition shutting the sliding door in a sprinter not the easiest to do quietly. In the future it won't matter what we want to do, we won't bother to hook up!