Once unless multiple fields or courts with differing start times are being used.
There are no instances, providing one is safe, to ignore the National Anthem.
Scotland's official National Anthem is the same as the rest of the UK - 'God Save the Queen'.
The country from which the Gold Medal winning entity (individual, pairs, teams, etc.) represents is honored by playing their national anthem.
I believe the visiting teams anthem is played first
The Philippine national anthem serves the same purpose and respect as all other national anthems. It is played before things like sporting events, or school.
Eminem is not a singer, he is a rapper. No, but he has attended many sporting events.
The National Anthem
Illinois is a state and does not have a national anthem. A "nation" has a national anthem. The national anthem of the US is "The Star Spangled Banner".
the national anthem for the armed forces is the same as the national anthem for the country, its a national anthem.
Hymne the national anthem, l'hymne national a national anthem, un hymne national
The original purpose of the National Anthem is to have a National Anthem. Some countries don't have a Natonal Anthem.
Newfoundland is a province of Canada hence the national anthem is the Canadian national anthem