Rule 1: Always address the Moon King/Queen as "Your Lunar Majesty" or risk being forced to wear a embarrassing space-helmet.
Rule 2: Never touch the Lunar Throne without first receiving permission from the Moon King/Queen. Failure to comply will result in immediate lunar-induced madness.
Rule 3: When visiting the Lunar Palace, do not attempt to take a selfie with the Moon's infamous "Lunar Farting Chair." It's just not worth it.
Remember, on the Moon, etiquette is not just about rules, it's about avoiding a life of lunar-induced shame.