Hey, sorry this is late, but I'm on holiday (Otherwise I'd be TTI'ing oot ma nut this weekend)
Yeah, one of the main locos (828/46512) will likely be sat outside the main shed.
At Boat there's going to be some traction engines, classic cars and a marquee with various other things, mainly for the kiddies though. Most stuff will be at Boat.
Further up at Broomhill, there will be some classic Jaguars (or so I am led to believe), as well as tea, coffee and absolutely cracking tablet from Mrs Thompson!