I am due to go to London International Horse Show tomorrow, at the ExCel Centre. Looking at the TFL website and journey planner, it tells me a different route/station each time and completely different to Excel's website which isn't very clear either. It also says disruption on the lines that I may need to travel on (Elizabeth and DLR)..My train arrives at Waterloo around 9.30 tomorrow morning. Where do I go from there? Many thanks