It’s an enjoyable film, although I don't foresee myself revisiting it, but I can suggest it to those who haven't experienced this particular installment of The Parent Trap. The movie has aged remarkably well; Hayley Mills delivered a fantastic performance portraying both characters. There were moments where I wasn't sure if it was the same person acting, truly believing they were separate individuals throughout the film. This may account for why so many scenes appeared to utilize green screen technology, despite the filmmakers demonstrating their authenticity through interaction with the set. It’s also remarkable how 1961-era green screen techniques resemble modern “true motion” effects, creating a somewhat artificial backdrop. The concept of a "twins switch places" is certainly a novelty, and this movie played a significant role in popularizing it. While there might have been an abundance of twin actors seeking opportunities at the time, contemporary perspectives would likely accuse films like this of depriving twins of potential roles. Despite being quite dated, it's fascinating to observe the 1950s depiction of households with domestic staff as commonplace. The adult characters were somewhat dull; the film’s energy came from the girls’ interactions—their conflicts and moments of harmony—which served to challenge the adults. This may be the movie’s fundamental flaw: a young actress shouldering the majority of the workload, while the rest of the production feels underdeveloped. It sadly highlights some questionable practices at 1960s Disney. Regardless, it's an entertaining film, and while repeated viewings are unlikely, it’s worth seeing at least once to witness the origin of a familiar trope.

Source on TMDB