i went there on monday and i think it was really great and definitely of world class standards.
however, one photographer's behaviour at the event digusted me a lot. while trying to take pictures with his camera mounted on a tripod (he was using a giottos MT-9160 i think), he kind of like brush people aside and even almost trip a child over with the extended tripod legs. when he moved back to get a wider shot of the flowers, he whistled at the crowd and kept saying "hello, hello" loudly in an attempt to get them out of his frame.
i think if he really dun want anybody in his shots he could have politely asked them to move away or just wait for the crowd to disperse. anyway i think by including some people in ur shots u can capture the atmosphere of the event better.