On all flights the check - in people automatically blocked out 2 spare seats for us, so we were spoiled for space. (havebabywilltravel.com)
If you do have guests over, just keep a bench or other spare seating options around or in storage. (livingroomideas.com)
Available to purchase online today, once you see how helpful spare seating can be, you'll wonder why you didn't buy your occasional chairs earlier. (dunelm.com)