Fine, but who says that can't be done as group :)
yep ... agree with this. The best teams I've been on (ie. best culture/fit/whatever) have always ventured out for lunch. Making sure we get away for at least an hour in the middle of the day made us more productive.
Personally I like to get out a stretch my legs a bit during lunch. We spend all day, indoors, staring at a screen. It would be best for everyone to get a little fresh air a walk about. If I stayed in the office over lunch I would be much less productive in the afternoon.