Related Clues:

• With 17 Across, sightseer's purchase
• Unfurled
• Began the betting
• Performed prior to the main act
• Like many tours
• Led off
• Admitted the first customer
• Unlocked
• Made the first bet
• Showed where to go
• Removed shrink-wrap
• Began proceedings
• Was a mentor to
• Steered
• Went before