Bonfire advice for visitors: don't

I spent an agreeable bonfire evening at Newhaven and Seaford Sailing Club yesterday. There are more photos on Flickr . Like most non-Sussex natives, I find bonfire puzzling. On the one hand, in the pages of the Argus I find Norman Baker, the local MP, and David Quinn, President of the Lewes Chamber of Commerce, lauding the event for the number of visitors it attracts to the town and the money they spend (how? all the pubs are shut or ticket-only); on the other, on their website the Lewes Bonfire Council express hostility to non-Lewesians who try to attend. They clearly belive that no one who cannot trace descent back to the seventeen martyrs burned by Bloody Mary should not set foot in the town, though nearly all the martyrs came form outside the town. '[We urge]...people living outside the town not to try to attend the annual 5 November [...] celebrations. The event is a Lewes tradition going back many years and allows the people of the town to celebrate the ancient tradition of Bonfire'. Do they stand at the blocked entrances to the town and at the train station to check birth certificates?