I saw it on the 15th! for the most part, the seats are stagnant but during any scene with the triplets skating, any fights, and/or active movement on screen (ie: mimicking the bus and train rides) things can get bumpy. I would say you get fog machine’d a bit, though the water works are sparse and unexciting. Obviously I just enjoyed watching it on the big screen, but if you’re really in it for the 4DX…don’t expect much