Translate the Unspoken Rules of a New Workplace

Every workplace has rules that nobody writes down and everyone knows. The earlier you decode them the better. This works from what you have already observed: what the behaviour patterns signal about what is actually valued, how decisions really get made, what the safe and unsafe topics are, and three practical things to do and avoid in the first six months.

Help me identify the unspoken rules in the new workplace described below.

For the environment and observations described:
1. The patterns of behaviour that signal what is actually valued here versus what the stated values say
2. How decisions are actually made in this organisation (and who the real decision makers are versus the nominal ones)
3. What the safe topics and the unsafe topics are, based on what has been observed
4. The three things someone new to this environment should do and three things to avoid in the first six months

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[describe the new workplace: size, type of organisation, how long you have been there, and any patterns of behaviour or dynamics you have noticed so far]
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