My GF said it best, for 6 bucks it's really good, if it was $15, I wouldn't be impressed. Basically it's cheap eats in a city that has any number of ways of draining your wallet. But in a city like NYC with so much to see and do, sometimes you really don't want the expense of time and money slowing you down for a so-so dining experience.
Food is good, service is pleasant, and despite line, they move quick. Portions are huge, we could have easily had one and split it with two people. There are two places you can sit, around a small flower bed/garden and around a fountain. It's actutally quite a nice little atmosphere; people from around the world and locals alike brought together for good food and good prices. All sorts of people all taking a break from their busy day...people with kids loved it as it didn't break the bank.
The food itself was a little bland and could have used some spice. I used the white sauce for a bit of flavour and a dash of the brown what tasted like BBQ sauce to kick it up a bit. Next time I'll go for the hot sauce. Drinks are sold at neighbouring cart for $1...so all-in -all, a good experience.