Restaurant finds out capacity is reduced because of customer mobile phone usage

Of the at least 6 posts from last week on this, the one with the most comments is https://news.ycombinator.com/item?id=8024577 , with 12 more at https://news.ycombinator.com/item?id=8037099 .

I use a little bit my phone while ordering at a restaurant, sometimes taking pictures. But my average eat time is less than an hour, even if I'm at a date with my wife.