Possible Clues:

• Criminal's head down before sentence, it's said behind bars
• Semisonic hit with the lyrics "You don't have to go home / But you can't stay here"
• What's after last call at a bar, and a theme hint
• When to drink up — Milo's gin etc (anag)
• I'm when clients go outside drunk?
• Store posting, and what the first words of the answers to starred clues could literally be doing
• When trading stops for Charlie, falling behind schedule
• When employees seem to move the quickest?
• End of (drinking) session