I think there is a distinction however between what is the minimum requirement and whether or not "no one wears formal attire any more".

It seems from my reading that the percentage of those wearing more formal attire varies by the percentage of repeat Regent cruisers who prefer the "old" dress code and by the itinerary (with Alaska being less casual).

Perhaps others who have cruised both before and after the change can comment in regard to the "actual" state of passenger dress at the 'welcome aboard' dinner.