I love Vietnamese food, especially how everything has it's own distinctive flavor which reflects one of the ingredients. 
I have never tried Vietnamese food but it sounds good from what you just described. Could you tell me more details about the ingredients?
It depends a lot on what you're eating, but some of the common ones are rice, soy sauce, and fish sauce which they call nước mắm
Is it usually spicy ? i am assuming it would be similar to like Chinese food, is that accurate to say?
There's a big difference to me.  Traditional Vietnamese cooking doesn't use as much oil as Chinese food, and has a lot of fresh herbs and vegetables.