Possible Clues:

• Avoid bed
• Choose not to go to bed (2 words)
• Make it to midnight on New Year's Eve, say
• Be a night owl
• Don't go to bed (2 words)
• Put off bedtime
• Decline to recline?
• Postpone one's bedtime
• What kids like to do at a slumber party
• Don't go to bed yet for yats