Communication is 100% key. If there are any reservations, fears, or restrictions you must communicate them with your partner. Keep your mind open and don't try to push your limits with your partner unless they openly allow it. This will save you headaches and arguments. If you have so many restrictions and limits that it ends up looking like a grocery list then maybe focus on what you DO want the experience to be and stick to that.

Also, explain your attractions. My wife and I have certain tastes that are far different from each other and they change constantly. She isn't into black men and definitely not into super long dicks. 7 inches is her max because anything larger just ends up hurting her. I'm not into huge tits but I don't want a super skinny girl either. I have a happy medium that pleases me. These have morphed from all of our experiences in the LS.

When posting, try to be specific about the kind of thing you're looking for. Explain what kind of person/people you're looking for, what type of experience you're hoping to encounter, and where you're located. This has helped us pinpoint exactly what we are looking for without wasting other people's time.

And, by far, no means no. If your partner says no about something then you need to respect it. Same with the other couple that you're seeing. Even if y'all are all naked and getting hot and heavy and someone says "no" or "stop" then everyone should oblige. I only say it because we had a guy continue having sex with my wife even after she said stop because she needed to take a breather. It took his girlfriend to say stop for him to finally get off.

tl;dr it's all about being respectful of your partner and everyone involved. Communicate, respect, and enjoy your experience.