For some reason,
arcades these days use tokens instead of quarters. This adds an additional (and irritating step) of exchanging your american currency for the arcades own proprietary currency. And once you convert, good luck converting back!
The newest arcades feature a fancy debit card system which is actually very convenient: you simply charge the card with a few bucks at a machine, and then swipe it when you want to play. This is nice because swiping a card tends to be a lot less prone to fumbling around during that "Continue 10...9...8..." thing. But on the otherhand, its not a pocket full of quarters. Miss the sound and the weight. It always feels like something is missing.