Cassius, I just can't handle my culture pre-lunch. I've never given much thought to what causes people-bottlenecks. Years ago, in another life, I used to be invited to lots of private viewings and that was lovely - no crowds and a glass of Moet thrown in. These days I'm put off by anything with big moving crowds. I don't have panic attacks but I definitely get on edge and rather short-fused. Maybe I will give the early slot a try though. Many many many years ago when my then partner was running a business in NYC, I was left alone all day long and I didn't really know anyone, other than my boyfriend. We stayed on the Upper East Side so I started off each morning with a visit to one of the many museums/galleries on our doorsetp. I would only spend about a half hour, but it was definitely a bonus to see things in small doses rather than spending the whole day. Those people in the centre of London who give away those nasty so-called newspapers every day; they definitely cause bottlenecks.