Having visited Whitby a couple of times myself, I know how much Dracula-themed stuff is available there on a daily basis and the place is certainly something of a Mecca for fans of Bram Stoker's eponymous blood-sucker, so God-only-knows what it's like at the feast of Halloween.
The reason I mention this event in particular, however, is because two-thirds of Human Nature (my latest Pax Britannia adventure, out in December) is set in and around Whitby. The majority of places mentioned in the book also exist in real life, so if you can't get there this weekend, why not wait until the book's out and then check out the locations mentioned in the novel? And yes, there are a couple of nods to Stoker's Dracula, of course.