@@SexPanther
Though it looks like it'd be a lot of fun, as I almost qualify as an ancient monument in my own right, I shan't be attending.
I have, however, put out the word among my younger friends in this area (about 70 miles south of London and well connected
by rail) and directed them to the organisers' web site.
I hope you enjoy your visit to my home city and also that you'll have some free time to see some of the many sights.
If time is short, a good way to do it is via the river - you can get a boat that brings you down to Westminster, past the Tower of
London after going under Tower Bridge and there's usually a commentary along the way to point out places of interest and tell
you little stories about the historical people involved. It doesn't cost a huge amount of money either.
The weather here is hot by English standards currently and is forecast to remain so for another two weeks - you can expect daytime
temperatures in the city up to 90F and night-time up to 70F.
On the topic that @@JohnnyDos touched upon, please do not be tempted to indulge in any of that stuff - even personal possession is
a serious offence with a maximum penalty of five years in jail, an unlimited fine or both. If detected at a border, do not expect to enter the
country even if not prosecuted. (Former Customs Officer and cop speaking! )
If you like beer, you'll find plenty to try in "The Smoke" (a nickname for the capital that goes back to the days when it was shrouded in smog).
Fuller's London Pride (see avatar) is a fine one and there is a micro-brewery near your venue called Greenwich Meantime that produces some
interesting ales too. Don't pass up the chance to taste some jellied eels - they are lovely!
Safe journeys and enjoy your visit!