Personally, I am meh about the romance. My favourite part is the 3rd act when the Carp Fairy and Peony finally meet and the drama that ensues from nobody being able to tell them apart. And the Carp Fairy was the only character in disguise as someone else! *metaphorically ate egg tarts while watching that play out*

Unlike practically every other story involving an imposer of some sort, the virtuous Carp Fairy, though an imposter Peony, did not befall a tragic end.

1960s CGI technology may not be at the level of the 2020s, but most of the physical effects were pretty cool.