The anime is good but the OVAs and this movie are kinda the low points to the series.
It mostly feels like an attempt to replicate the anime without actually having enough of a plot to justify the 2 hour run-time. I understand the movie isn't canon and this likely explains why it feels less polished.
The good:
Recognisable, likeable characters and great soundtrack, animation seems better.
The bad:
Pacing, humour is weaker and less original at times, animation doesn't focus on scenery which is generally it's strength.
-Instead of beautiful scenery being the focus of quiet moments, we get long, drawn out scenes of the girls... cutting grass, and sitting around sadly because they can't cut grass (for like 30 damn minutes).
-Instead of looking at different ways to use the natural environment to camp, we contemplate unmoving faces as people pause and say 'Hm' at each other; you know, adding nothing to the story and definitely not worth slowing down a scene to show multiple times.
-Instead of great camping meals that highlight realistic ways to eat well in nature, we get several non-camp related meals that drag on and on and on and offer no real educational value (that crab scene was honestly uncomfortable ASMR more than anything).
-Instead of a steady stream of light-hearted situational jokes, we get spaced out humour, most notably, throwback jokes taken from the anime series.
It's like they took the general elements of the anime and made a bad photocopy and hoped that'd replicate the soul. It's servicable for those who care for the general Yuru vibe or nostalgia but this shouldn't have been a film (2 episodes would have sufficed).