Given that it’s billed as a circular tour, I view it as unlikely that it’ll travel along the North Wales Coast on an out and back run. No idea where it’ll be headed though I’m afraid, just speculation.
The traction should be a pair of DRS class 47s, as DRS now hold the contract for the Northern Belle operation. 47790 has very recently been painted in Northern Belle Pullman livery to match the coaching stock.