With how much time Oda has spent on this movie, don’t be surprised if he makes it fully canon. I don’t remember Oda personally advertising hyping up any of the other movies this much, and he also included a lot of details that have to be canon (Shanks backstory, RHP abilities, BM being alive, etc). Oda already made Uta canon, and as far as I’m aware, there’s nothing that makes the movie impossible to fit into the timeline
Yamato is definitely joining next chapter and not on the film lol