Whats your guys preference?
Personally, I prefer a strict, high-discipline gym with a total Hard A** as my coach/ instructor
There are some things that it matters with. Any school that is not strict with safety for example is a bad school. Schools that don't start and end on time are unprofessional. If they aren't strict with sanitary things like letting people continue with cuts or skin infections you should run away quick. Professionalism, safety and sanitation should always be strict.
Things like bowing, "Yes sir/ma'am", running class like a drill instructor... that's all just preference. I don't like it that way, I did at one point, but it just leads to ego inflation and the wrong sort of dynamics. It's important in the military, but we aren't military and some aspects of military discipline are really not healthy for people not in the military IMO. But if that's what a person wants, go for it.
I train because it's fun. I get to go to work everyday and do what I love with a great group of people and teach people from 3-years old to 60. All of them are there to have fun. They might have other reasons for being there like losing weight, confidence, sport, self-defence, etc. But if it isn't fun those things aren't going to be realized.
My opinion is that martial artists sometimes take themselves way to seriously. Yes, there are some great benefits that can come from martial arts, but they can come from other things too. There are also some great benefits that come from approaching things with fun in mind, and there has been a lot of research that shows people learn best when they are having fun.
Discipline to me is not something a instructor should do... if it comes to that the instructor already failed. Discipline is when people do what they are supposed to, when they are supposed to without being forced by a external force. I want the kids to listen and pay attention because they want to, not because they are afraid not too. So yes, we joke, we make funny faces, we play skill building games, but they also work their buts off, hopefully smiling and laughing the entire time, and hopefully me and my other instructors are also smiling and laughing along with them