I came into this hoping I wouldn't be trash for it, but I was trash for it, of course.
The movie is split into four parts. Each story details the events after Free! Eternal Summer. The stories mainly center on apartment hunting, a visit to the hot springs, filming a swim club recruitment video, and a surprise party.
The stories themselves are the biggest hang-up I have with the movie. They weren't too interesting in their premises. I mean ... an episode about apartment hunting. Really. How interesting can that get.
But I did like it more than Free! Starting Days. That was a reconstitution of Free!, while this at least added new elements to the table. Even though it was obvious that this movie was just a lead-in to Dive to the Future, it taught us more about the characters Free! fans we know and love.
(The Samezuka team was especially showcased in this movie. I love them more than ISC, so I was happy about that.)
However, characters from Free! Starting Days were constantly referenced throughout TYM, which was something that I hated. This broke up the flow of the story and forced you to rethink who was who.
Overall, I did enjoy Free!: Take Your Marks. It's a great addition for Free! fans. I am so excited for the third season of this show.