I know that they can get people out by 11pm, even if there are 20,000 of them. There is no suggestion of 'all night parties' in the licensing application, contrary to what you are trying to imply.

In relation to numbers, there are fairly good methods for estimating number of people are large unticketed events. That is how we know approximately how many people were at Jerk Chicken or how many go to Blackheath fireworks each year. It is also fairly easy to close gates when numbers approach 9,000. But it might be wiser to allow a couple of thousand extra in, rather than locking them out of the park to protect a license without protecting local streets.

Horniman have said they plan to run a few events of more than 5,000 people each year, much as they have done for many, many years. One of two of these might approach 10,000 but they have learnt from Jerk Chicken and know what went wrong with an event that they acknowledge outgrew Horniman.

It comes down to whether you believe the Horniman management are responsible and can manage events in the museum and gardens, or whether you think they are planning to run 'all night parties' every day of the year!