Last time we had a long layover at JFK, friends picked us up and we went into Manhattan for dinner. We have a great steakhouse in Tribeca (I believe) that we love to eat at when in New York. Five hours might be ok if you can get in the special security lines on your return to JFK.
"Carpe diem quam minimum credula postero"
Seven Seas Explorer - Miami - Venice - Mar 2017
Silverseas Explorer - Arctic - Aug 2017
Seven Seas Voyager - Rome to Beijing - Oct 2017
Seven Seas Mariner - Lima to Buenos Aires - Jan 2018
Silverseas Explorer - Siberia - Jul 2018
Seven Seas Mariner - Australia Circumnavigation - Dec 2018