parade scene
reaching out on a limb here.
Looking for the members of the Fort Vancouver High School marching band that were in this movie
One of the people commenting on this MHO video went to school with one of the kids in the movie.
Perhaps you could aks that person. A person who goes by Sco0bo0ladii and that's no joke.
If you do a text search on this page for "same school" you can find the comment about it:
https://www.youtube.com/all_comments?lc=Ejyw1c5dTBbgqf3IkypWMXWAoJsAxFSF-CHvdhA5GPQ&v=_fTZcHACrqQ
I hope you find the ones you're searching for.
The harping was too much, so he split.D r i n k s F o r S h r i n k s