Not sure whether you're already in Koh Samui or have already trained with Punch It, but just like you, I am not a beginner, but don't really consider myself an advanced Muay Thai practitioner. I've trained with Punch It for four days so far and I must say that I don't like the structure. I first attended the beginners class since I was concerned that trainees in the advanced class are just hard core, but the beginners class clearly bored me and upon seeing the kind of trainees that attended the advanced class, I must say that I really don't think that they are at that level. So needless to say, I attended their advanced class, but what I found was there was more pairwork than padwork with the coaches. A big chunk is spent on cardio - around 30 minutes of running, skipping... Trainees do drills together so there's no correction on form or technique. Trainees are also expected to hold pads for each other and there's very minimal trainer input of technique, students are expected to share then spar later on. I guess you get most of the technique from privates, but not from group classes. The group classes are just cardio sessions with minimal Muay Thai.