Further to my initial post on this tread I have now been told that Bristol Parkway station will also be closed on the two weekends stated in that initial post and also the following weekend, 17th, 18th and 19th of November. Also to add to the mix there will also be two big rugby events in Cardiff versus Australia and Geogia during these periods of closure with one of the fixtures due to end after 22.00 and NO trains back to Bristol or London on that particular night.
Also finally on this post as its related to Bristol Parkway, the new fourth platform at the station is to open in time for Christmas, the date hasn't been finalised yet but is pencilled in for either December 23rd or 24th
Wales vs Australia (11th Nov) is a 17:15 kick off, so will likely be finished by 18:45. Probably attract a few Aussies from London, but likely little other significant travel from outside the region.
Wales vs Georgia (18th Nov) kicks off at 14:30 and fairly unlikely to even sell out the Principality Stadium. Vast majority of spectators will likely be travelling in from South Wales region for this one.