me and the bride went to nyc a few years back for a 4/5 day trip. it was ok i guess, i'm not a city person. my favorite part was central park. should be beautiful this time of year with things blooming.
we hit some of the museums, my bride is an artist. they were pretty neat. not my thing, but nice to see at least once.
as for eats, we mostly hit small places whereever we were. can't remember any of them, but they were all pretty good.
night entertainment, we tried catching a late ticket to broadway and off braodway shows, didn't like our options. also were going to go to a comedy club, but it was crazy long line.
best thing we did for quick travel was buying a 1-week subway ticket and bought a subway app for about $10 that was really accurate on times, running late, etc. basically google maps for nyc/nj subway system. worth it if you want to move quickly. but we also took a couple days and just walked around, which was nice too.