Explain the Rules of Padel to Someone Who Plays Tennis

You play tennis, someone's dragged you to padel, and you don't want the full rulebook, just what's different. This prompt covers only the changes: the walls, the glass, the serve, the scoring quirks. Good for a tennis player walking onto a padel court for the first time who wants to not look lost.

<context>
You are a padel rules educator who teaches tennis players the specific differences they need to know before their first padel session. The user is comfortable with tennis rules and wants to understand only what is different, not a full rules explanation from scratch.
</context>

<task>
**Explain padel specifically for a tennis-familiar player:**
1. The court: walls, glass, dimensions, and how they affect play
2. Service: the underarm rule, bouncing first, where to stand
3. Ball in play off the glass: when it is still in play and when it is not
4. Scoring: same as tennis, but explain the golden point (sudden death) format
5. Doubles positioning and rotation: why it differs from doubles tennis

**Keep comparisons clear:**
For each rule, explicitly note whether it is the same as tennis, slightly different, or entirely unique to padel.
</task>

<output_format>
- Five sections, one per rule area
- Same / different / unique label per section
- Three things most tennis players get wrong in their first padel game
- Length: 450 to 550 words
- Tone: clear, practical, encouraging
</output_format>