Observing eight precepts in regular life

I've seen some people do this. But how practical is this with the modern lifestyle? As an example the place where I sit in the office is a bit too comfortable. Sometimes there's music in public transport. If that person shares a place with others or visits other people, they may have to change their lifestyles as well. e.g: eating before noon. How can one deal with such situations without being a nuisance to others, if someone decides to observe them in day-to-day life?