Rebuild the missing context
Assume the recipient will not remember every date, promise, or earlier conversation. For a message about how to request accessibility at a community event, use this factual base: name the event, role, custom, language, access need, or shared rule and distinguish impact from assumed intent.
Say what needs to happen next
State the decision, information, or practical action you need and include a real deadline only when one exists. Ask for the correct practice or a concrete change and give the relevant person room to explain. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Avoid making urgency into pressure
Do not speak for a whole community, demand education from one person, or use public shame as the first step. Use safeguarding, accessibility, anti-discrimination, security, or emergency routes when rights or safety are at risk. Do not make the other person responsible for reducing the discomfort that prompted you to write.