Usually It's The Other Way Around...

[Moonliner]

Originally Posted by Cadaverous Pallor

"Take a ticket" would be faster, too! I wish I wish I wish...

Be careful what you wish for. "Take a ticket" works great on the way in but it can really cause a disaster on the way out.

One simple solution is two fold. First, encourage use of electronic payments (perhaps a slight discount) and second add a locked drop box for each booth. They keep a bit of cash for making change and the rest goes into the drop box.