When I moved up from Junior to Senior band in eighth grade — this was one of the first marches we practiced. The first time, as with most pieces the rest of the band was familiar with, I sort of watched the notes for third coronet zip past.
The situation improved. Each time I managed to actually play more notes — even at the correct time. In other words, I caught the end of the learning curve and climbed.
Parades are intended to be fun — for participates and observers. Marching in straight rows. Keeping step. Playing from memory. Catching beads or candy or favors tossed from a colorful float.
And then there are other sorts of parades — not as organized or scheduled.