Well, I'll have to take you word that the people cruising Europe may be more formal in their appearance since it's been a very long time since we've cruised in that region.
My cruises lately have been to Mexico, Caribbean and Alaska, all of which have been on the casual dress side.
Have the European cruises on Princess enforced the strict dress code like they used to many years ago on all their cruises or transitioned to giving people the choice to be more relaxed about their style?