It's unusual to stay up all night.
Sarah went to her friend's house for a slumber party even though she has to work at a fast food restaurant the next day.
Sarah wants to have a good time with her friends.
Sarah tells her friends that even though she wants to hang out more, she should probably get some sleep because she has to work.
Sarah stays up all night with her friends and then goes to work.
Sarah's manager is pleased with Sarah's performance when she comes to work rested.
Sarah's manager is angry since she appears to tired to work.