Key Takeaways

Uncontrolled aerodromes offer no ATC control or clearances; you are responsible for collision avoidance.
AFIS provides information (wind, runway, traffic) but no clearances. "At own discretion" means you decide based on information provided.
Self-announce procedures at unattended fields follow the format: "[Aerodrome] Traffic, [Callsign], [Position], [Action], [Aerodrome]."
Always readback information provided by AFIS (wind, QNH runway).
Conduct thorough look-out scans before departing or landing at uncontrolled fields. Use both eyes and ears.
You may leave the frequency at an uncontrolled field without permission, but good airmanship suggests announcing your departure.
Frequency discipline and clear communication are more critical at uncontrolled fields because there is no radar or controller to catch mistakes.
The distinction between "cleared" (ATC) and "at own discretion" (information service) is non-negotiable and legally significant.