In general
- Politeness will get you a long way in the scene. Treat other people as you'd like to be treated.
- Honesty is highly valued in the lifestyle. Lying, whether about one's experience level, marital status, risk factors, or anything else is frowned upon, and will usually be found out.
- Touching (even casually) other people or their possessions (including collars, cuffs, and apparel) without permission is unacceptable. Most people enjoy playing show-and-tell, but always get their permission beforehand.
- Following someone around ("puppy dogging") is likely to creep him or her out, and make them want to avoid you instead of getting to know you.
- No Dominant may demand anything of another person, unless the other person has consented to engage in play or a relationship. No submissive is under any obligation to serve or obey anyone whom they don't choose to obey or serve.
- There are usually Dungeon Monitors [DM's], hosts, or people in charge at most organized BDSM settings. They are there to enforce the rules, but are not psychic; if you are victimized by someone, let those in authority know. They cannot do anything for you without knowing that something is wrong, and concerns reported after-the-fact become difficult to validate or enforce.