As far as I am concerned the only thing that spoiled a wonderful event was the decision of Simmonds to hold a trade fair off site. Given the symbiosis that exists between the companies that chose to attend the trade fair and the MMC, I feel they should have supported the main event. Clearly they didn't feel any such obligation, despite the fact they presumably earn a good living riding on the back of MMC. There could be no clearer a two fingered salute than holding the trade fair. Shame on them.
I wholeheartedly agree with your sentiments although I would queestion your use of symbiosis. In a symbiotic relationship there is mutual benefit, whereas here the benefit is one-way so, strictly speaking, parasitic would be more accurate.