Slot Machines onboard Radiance of the Seas

After hitting multiple $100 wins on the slots playing $1-$2, I sat down at a buffalo machine, deposited $400 and pressed 180. It hit a win of 4800 coins, which I interpreted as a $48 win... But, then... the screen went black with a message to call an attendant... While waiting, I figured out the guy before me was playing quarters and my bet was actually $45 instead of $2... My raced as I calculated the win to $1200 and realized that it was a hand-pay.