Just think - in a year, staying up late might not matter so much as there are a lot of days to spread chores over. So one night of less sleep or late sleep-in the following morning doesn't matter so much.
I fell asleep in my chair after posting here! I told Ron, "I'm just too old for that much a disruption to my sleep schedule!" LOL. He stays up super late all the time, so for him it wasn't a big deal.
