DO NOT ask the local government what the rules are.
At best, they do not know the EXACT rules, and much of what they say could be wrong.
At worst, they tell you something that serves their interests and not yours.
Go right to the source..... www.municode.com
Click on "library" tab.
READ the section of the code that has anything to do with "Coin operated" "Games" and "Vending"
If the code says "coin operated amusement game" and yours is on free play, BINGO! you are exempt.
Many other quirks remain in old sections of code written as long as 50 years ago. But.... THE LAW IS THE LAW!
Don't trust leaders.....watch your parking meters!