It has already
Pop warner allstar cobras FB/RB
Allstar weekend started in 2007. their name was "Allstar" at first and they had a few different band members but then it changed to Allstar weekend.
Mr and Mrs
Mr and Mrs is correct or Mrs and Mr is correct
Mr. and Mrs. (ex. "Hello, Mr. and Mrs. Evans" instead of "Hello, Mrs. and Mr. Evans")
Mr. & Mrs. Smith
In the US it is normally Mr. and Mrs.
The cast of Start Something - 1928 includes: Stella Adams as Mrs. McGinnis Gene Layman as Mr. Jones Harry Long as Mr. McGinnis Addie McPhail as Mrs. Jones
Dr. and Mrs. or Mr. and Dr.
I would address it to Mr and Mrs David Keys. For the salutation I would use Dear Mr and Mrs Keys.
Mr. used to be acceptable to address a household by just using the last name, e.g. "Mr. Jones". In modern times, it is typically to use "Mr. and Mrs. Jones" or "Mr. and Mrs. Timothy Jones".
Mr and Mrs its just more formal today in society.