I respectfully disagree. I have a German brother in law. He has now lived in three places in Canada and could give you reams of differences between back home and his new home. Food, vacation days, beer, wine, education systems, medical system, driving, humour, history, heroes, politics, clothing, hobbies, language, multi-culturalism...
I remember being on a ferry with a bunch of Germans, most had met that day, on the boat. They were playing a pick-up card game. They taught me the ropes and the name, but it's been a while, I've forgotten. Regardless, they sat around the table, talking, laughing, playing the games and taking shots of schnapps. If one of them moved here, he'd be hard pressed to find that atmosphere. (The ferry is a favourite german destination, that's why there were so many on the boat.)
To meet a bunch of strangers and follow a routine so normal at home would be kinda rare here. Like the old Italian men who play bocce or Indians with cricket, pitches can be found pretty commonly there, but here it's a Sunday date at one or two specific places.
I remember listening to a S.A. woman on the radio. She started a business to help other South Africans adjust to living here. One area of contention was shopping for food, because packaging and name brands were so different. In Canada, you buy groceries at the Superstore, not a corner butcher or baker. Those are more specialty stores, or at least they are in the west where I live..
Our park systems are different, so then are the games we play. Our education and apprentice system is vastly different than Germany. Our weather temperatures are more severe than most of US but we share common language, for the most part. Australia has a very similar government but has very different reference points, beyond the cliches.
Culture is all the little things you don't think about to often, but if you move, you'd soon miss 'em.