Where: Selfridges (400 Oxford Street, London, United Kingdom) - the nearest tube stations are Marble Arch and Bond Street. The nearest car parks are Bryanston Street, Kendal Street, Car park on Q-Park Oxford Street and George Street, although I would suggest due to the cost that it might be cheaper to travel in on public transport.
When: Dan is scheduled to arrive around 17:00*, whilst some fans are planning to meet up around 14:00.
Can I get my item signed by Dan?: Based on prior experience, yes, but only if you'd bought a bottle of Crystal Head Vodka. Even if it wasn't necessary, I would suggest buying whichever bottle you could afford as a polite gesture.
Can I get my photo taken with Dan?: Based on the previous event, Dan was happy to pose for photos, but depending on his schedule this time, and the security folks, this may be subject to change at any time, so please keep that in mind.
Here's some recollections based on the last time he visited:
The security folks were a little squirrelly, but as soon as it became clear that we could wait patiently, and we didn't get too caught up in things, they seemed okay. Excitement is understandably, but let's keep it professional, people.
The signing was on one of the below-ground floors of Selfridges, and the queue itself was narrow-ish, so consider taking as few bits of bulky gear as possible, reducing items that look suspicious to security folks is probably a good move in these difficult times.
*Dan's arrival was late at the past event, so please consider the possibility this could happen again. Please give ample "wiggle time" to avoid disappointment/missing out on other London-based activities.
During the previous occasion fans could only meet Dan and get something signed if they'd bought one of his vodka bottles. Additionally, please consider arriving early to take into account any long queues.