Most of my Muay Thai training is under the MTIA and we tend to bow and are taught to do at least the wai kru if not the ram muay if we're going into the ring. The bowing isn't as strict as it is in Karate but it is usually done when entering the gym, leaving, and at the end of the class. Saying "sawadee krap/kaa" when bowing. Doing the Wai Kru after a drill..never seen that in any gym I ever trained in, that would be interesting A lot of gyms claim to teach Muay Thai(in my area) but don't, they're teaching more of a style of kickboxing with something similar to a muay thai roundhouse/dtae and maybe even a tiip/front push kick but with lots of boxing and hardly any knees...and probably hardly, if any elbows actually done in sparring or in the ring. One such gym which I give praise to claims to teach "Eurasian Kickboxing" which is fine by me. When I first started Muay Thai here in Tacoma a certain gym tried to impress upon people that they taught Muay Thai but all of their fighters but one always fought with shin pads on, never with knees allowed, and certainly not with elbows. Another gym not too far away teaches "muay thai" but the instructor from what I know only has a karate and kenpo background and the only Muay Thai "instruction" he has had is from a former person I used to train with(that isn't instructor certified). Then you have people certified in JKD under Chai Sirisute that can't tell me what camp they're under. Now do n't get me wrong I have nothing but respect for Sirisute's skills but I have personally talked to two certified instructors under his organization that didn't know what I meant from what camp they're under(I'm always curious about martial art history) and then they got offended and questioned my credentials and told me my former instructor isn't even in the USA anymore which he is and has been for at leat the last 10 years. Anyhoo to make a long story short if you're training at a Muay Thai gym that doesn't keep the traditions of wai kru/ram muay/no bowing/no thai terminology/no prajiat/mongkol wearing in the ring then it's probably not really Muay Thai but more of a "kickboxing" style with some Muay Thai influence. You guys that train in gyms without any of this that want to try to act like you train in Muay Thai and stroke eachother's egos go ahead but that's not what it is..and I'm not saying that it isn't less or more effective then Muay Thai but it isn't Muay Thai. Peter Aerts doesn't claim to be a Muay Thai stylist but many people call him Muay Thai.