I think the dollar Wheel of Fortune machines are the most consistant among all the ships. However, I was on the Dawn Princess, playing a nickle machine for the first time and won 4000.00. It was a Diamond Ring theme. I really cannot remember the name of it. Also there was an I Dream of Jeannie machine that also paid well...especially after midnight!
Good luck. I never seem to do too well the first couple of nights.
Alice in NSB