[Sundae]

I admit we have a very different culture here.
The armed forces nominally serve the crown, but I would really snicker if I read that a bunch of squaddies stood up and waited for the national anthem to begin again.

Then again, we don't play it before films (WTF?!) so as I say it's a huge cultural difference.

Perhaps it's just because our national anthem is about a person, but it's really not considered important to revere it. It's just a song, it's not this country. It may well get changed at somepoint, same with the flag. Neither is England (or the other various monikers for our islands).