No alcoholic beverages between preliminaries and finals, please. No explanation is necessary. If you see a problem, let the chief judge or referee know. You are closest to the swimmers and will probably see it first. Chief Judge These are notes I have made to myself over several years.
None is written in blood or is sacrosanct.
Use what you need or applies. Do instruct officials on the way to stand on the edge of the pool. Not only does this look more uniform, but it helps balance. A judge who falls in the pool is embarrassed and may be disqualified. No heat sheet or clipboard should be in the hand.