My experience with Newton is that they will try to push the pricer stuff (like crabs, prawns, steamed fish) on you, if you're a tourist, which is kind of a turn-off. It gets a lot of foreign visitors given its location (off Scotts Road).

You are advised to ignore the suggestions and go with what you want, not what they want to sell you.

As mentioned by others, Singaporeans are pretty serious about their food-- ask local folks where they like to go for hawker food.