if you think that 23,000 people (that is the officially coroborated figure of attendees) descending on a small area with NO parking marshalls provided, police given no estimate of visitor numbers, and numerous other failings in the organisation of this event (which bears no resemblance to the 'pilot' jerk-cook out of 2006 - see Horniman Trustees report from 2007) is good, well, i have to say that i think you are totally deluded!
With all this in mind what if a fire had broken out either within the Museum area or within one of the gridlocked local streets and a fire engine/ambulance could not get through? I think it is sheer good fortune that a serious incident did not occur due to the appalling lack of accountability in the organisation of this event. Sorry, i would not like to see this event continue in Forest Hill or be transferred elsewhere under the current organisers, which is to say nothing about the lack of responsibility taken by Lewisham Council and the Museum Director Ms Vitmayer.
Please don't patronise me with the 'put up with it it's only once a year' nonsense - if this really is a community forum, i am amazed that people are being so blind towards the divisive efffect that this is having on the area....