Possible Clues:

• What's so fine about a pound if it gets you only one drink in the end?
• When it's grand, it's the last scene
• Last scene
• At last the drink comes last
• Last act, movement
• Climax, end
• Last song etc
• End with a bit of fish and a drink
• The launch of fifty fireworks in the span of a minute, say
• In conclusion, to use trickery's no good