Holiday etiquette: Never arrive exactly on time and put away your freaking phone

Normally, the word “etiquette,” with its overtones of finger bowls and antimacassars, has me (metaphorically) reaching for a revolver.
http://www.theglobeandmail.com/life/holiday-guide/holiday-survival-guide/the-real-holiday-etiquette-guide-top-tips-on-what-hosts-and-guests-should-and-should-not-do/article22096342