Most important single thing: QUIET!

Meaning:

No TV, music, etc.

A no cell phone area, where the rule is enforced!!!

Parents of noisy kids are told immediately to shut them up or leave -- and it's enforced!!!

Staff in the lounge, behind the bar, and in any adjoining break rooms, KEEP QUIET!!!!

(Well, I also want universal peace, prosperity, and love. Sigh ...)