As far as tabu/tapu is concerned, it's mostly little things. Like being careful about touching someone's head, and not sitting on tables (especially those that could be used for preparing or eating food). I'd also rather sit on the floor than stand if other people are sitting, which has confused other people from "why are you sitting on the floor?" backgrounds.

I think the primary things people would notice about my family are food-related (curry is a staple meal, and some Pacific Island influences here and there) and clothing-related. While we don't usually wear them out and about in the city in New Zealand, my family tend to wear sulus pretty often in summer around the house. Once the temperature gets up above 25°C/77°F or so, my mum might even take off her cardigan! :-)