How do you take orders at an event that has already been paid for?

[kinoscoffee]

We own a mobile coffee trailer, and we do events such as weddings. Prior to the event, we send an invoice to the customer for the full balance of the event which covers a certain amount of drinks. However once we actually get to the event I still run the drinks through the register so I can track how many drinks I am selling and I can see what modifiers/variations sell best. I also do this so I can have a ticket print so we know what to make. However at the end of the event, I have an open ticket for all of the drinks. If I comp the ticket, my gross sales will be much higher than they actually were and so will my discounts. If I void the ticket, they wont go into my history for tracking drinks. Any suggestions?

[Donnie-M]

@kinoscoffee I would set up a second set of items that are .01 each that way when you comp them it is gonna be a trivial amount.  The other option is to set up a second location and copy the item catalog and do the drink and comp thing you talked about and exclude those sales when you do accounting.

Mainly what I see you saying is you want to track the drinks and maybe compare to what you are billing to ensure what you are charging is the right amount etc...

You could also convert the open ticket to an invoice and save as a draft so you can look at it late per se...but if you want to make it least impactful, the penny drink option might be best..you could even tie that to a second location so the prices for the second location are all a penny.