The 'ready to serve' attitude is in general higher with non-US-based crews (even when flying North American carriers) but
the differencies from crew to crew is what astonishes me more than the (expected) mental/cultural/geografic-background differencies and
when only looking at UA-service, than the (several times now) experienced lowest levels (even in business class, worse then with other carriers in eco and I just don't tolerate this anymore and avoid these routings to the best by switching to other StarCarriers like NZ) are the UA transpacific segments to/from Australia. Even (very tolerant) Gisela will never again 'ride' UA transpacific (in buisness).