So im from a sleepy small town in Queensland Australia (population 45,000 people)
I have opened up an arcade bar which i built the machines with nuc pc and using roms on the cabinets, They look the part with signage, shape, light box etc and only have 3, but a customer told me they are an avid retro arcade and these are illegal as we are charging to use them (tokens)
I have been doing some research on this and what i can do, its neon impossible to get arcade games in Australia nevermind anywhere 5hrs from where i am, and looking at some solutions.
I did read one way to buy the original boards then put them in with jamma, issue i have here is that i have written software for the mame which collects details like tokens, usage, high scores which i want to show on big screens like leaderboards etc.
The other way i read was to get the original board and get an eeprom reader and dump the rom and use that, then keep the board / rom as proof i own the licence.
I plan to have more machines too.
Can anyone elaborate on these ideas or any others please. Also any suggestions where to get boards from in the world

Thanks in advance.