Looks to me like the Rivera resort is the love child of a Marriot father and French Riviera mother. True, she inherited touches of the grace and elegance of her mother, but overall, she takes after the blocky, bland features of her American father.
I don't see it. Let's remember.... It's not like a "Marriott" is a creature from outer space. Modern hotels "descended" from older hotels. So modern Marriotts and American hotels in general, descended from older European hotels.
So both a modern Marriott and the Disney Riviera... and every other hotel, "descended" from the prior hotels. Difference being the Disney Riviera Resort attempts to evoke a bit more of the style specifically found in that region.
It's the difference between the youngster who dresses up in vintage clothing vs the youngster who only tries to fit in with only the most generic but modern trends.
All the Disney resorts are playing "Dress up".... Boardwalk isn't ACTUALLY the Atlantic City Boardwalk.. It's just a question of how much effort do they put into the "dress up" and how well do they pull it off.