Yes flight attendants are very open minded people. They see the world in a different perspective and there is simply so much we can learn from them about life. However, them being open minded doesn't necessarily equate to them accepting all types of "business proposals" or "business opportunity meetings". It simply means that being around with flight attendants may open your mind to new learnings.
Knowing that flight attendants are indeed open minded people will simply show you how their job of travelling affects their lives and here's how they become more open minded individuals:
Just a note, again we repeat, this does not mean that just because flight attendantsy are open minded, they will accept your "business opportunity" right away. There is no corelation between being open minded and accepting or rejecting your "business opportunity offer".