Does this also apply to the Slot Machine since it is indeed a "staff Upgrade" or once you buy that you just need to make sure it always have 5 dollars in it?... So I lied not just one last question after all!
For the slot machine, you need to have $5 on it in order to use it. By "use it" I mean to have the option to make a check to see if a patron lost money on the item.
Now. In order to use the slot machine legally you need to purchase the gaming license at the start of every scenario (which is why the slot machine falls into the category of a staff upgrade since it could have a yearly cost whereas club upgrades are a one-time cost). If the club is raided and you are operating your slot machine with a gaming license then you are fine. If you are operating the slot machine illegally (without the license) then your slot machine is confiscated as well!