We brought our 11 month old daughter along with us, and we got rushed to the front of every line. We had to wait a long time there, but our interview was by a very friendly woman, she only asked a few questions - "how many times has he come to visit" and "how old is your daughter?" and "does she have american citizenship?" and "what language do you communicate in?". It was maybe 2 minutes max. They did question me about my tax returns, but the tax receipts were accepted fine.