You Are Organizing a Pub Night at Your School

Essay

You are organizing a Pub Night at your school.You are going to sell beer for $2 and pop and chips for $1 each.Four people will be working behind the bar, and they have all assured you that because the prices are easy to remember and easy to add they will be able to handle collecting the cash and serving of the drinks and chips.They suggested that you give them each a $20 float of loonies and toonies to have in their pockets for change.
Required:
Critique the proposed system and suggest improvements in the way the Pub Night could operate.