Cash float
Takes 2 minutes to readPlease do not rely on the organisers for change, and consider that banks may be closed or difficult to get to over the weekend. Plan ahead and order enough change and the appropriate denominations depending on your sales prices. For example if you have products for sale at $15, you can expect you'll need to have a lot of $5 notes on hand for change.
If you expect to be making significant volumes of sales and will be handling large quantities of cash over the weekend you may even need organise for a secure cash delivery service provider like Armourguard to come and deliver/take away cash if you do not have personnel on your stand who can manage this thorughout the show.