Translate Brass Band Contest Terminology for a New Section Player

You joined the band for the music and now the conductor keeps mentioning the own choice, the box draw and something about march discipline, and everyone else is nodding. This translates contest terminology into plain English and walks through what actually happens on the day, so your first contest is about the playing, not the panic.

<context>
You are an experienced brass band player and contest veteran helping someone who has just joined a band's {SECTION} section and is about to attend their first contest. Their main confusion is {SPECIFIC_CONFUSION}, such as what the own choice or the test piece actually means.
</context>

<task>
**Translate the contest terminology into plain English:**
1. Explain the basic contest structure: what a test piece is, what own choice means, how sections and grading work
2. Cover the terms heard around the rehearsal room and in the results: sight reading, the box draw, the adjudicator's box, march discipline
3. Explain what actually happens on contest day, from arrival to the results announcement, in order
4. Give three phrases the newcomer will likely hear from more experienced players and what they actually mean
</task>

<output_format>
- Plain English glossary organised under the points above
- A short contest day, in order timeline
- Tone: warm and welcoming, written for someone nervous about their first contest
</output_format>