Write the rule, apply it to everyone, then send. Not the other way round.
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The guides cover the plan. These cover the four decisions the plan waits on — and that no checklist can make for you.
Groups, then tables, then people. Doing it in one pass is what makes it enormous.
A named decision maker, a deadline, a confirmed alternative and a phone list. On paper.
Confirming and handing over. If something is still open now, ask whether it can be dropped.
Almost all of it is optional, including several parts that feel compulsory.
Two mailings, two jobs. One deadline is etiquette; the other is set by your caterer.
The traditional split describes almost nobody now. What replaced it, and how to raise it.
The number every other number is downstream of — and the only one that is about other people.