They use a game card like Dave and busters. The cards you use for round 1 are only good at the location you visit. Good to be aware of if you plan on visiting other locations.
We added funds to a card for most games, don't recall any coin machines
You buy credits which are stored on a game card, and then you swipe the card at each game or claw machine. The number of credits for each game or claw machine varies.
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