I chose a middle seat originally with a flight party of 5. Chose 2 window seats and the 3 in center, so we would all be together. But then a 6th joined and I was able to split 2/2/2, but not really near each other. I don't fly often (furthest have been 4-5 hour flights in economy, have gotten a little antsy in terms of shoulder space, but never felt the need to get up). Upcoming trip from East Coast to London will be my longest flight and also first time experiencing premium economy.