In my dojo I know how what to expect. I see a lot of old guy network in the posts around IP. I am not interested in putting myself in a place where I am uncomfortable.
I find the times I learn and grow are when I am willing to be uncomfortable, which is part of why for over 15 years I have made it a point to visit all kinds of dojos and seminars within pretty limited budget and time constraints.
Not all end up offering something I want to pursue further, but I have never felt that I was in danger and I have never felt that it had been a waste of time. There is usually something that I can bring to my daily practice.