Thanks for info, do you work for the railway?Reduced service between Donny and Sheffield that weekend. The online journey planners haven’t been updated yet - there will only be one Northern service an hour. The TPE trains are terminating at Donny as only running between Cleethorpes and Doncaster
National Rail Enquiries currently allows me to select multiple advance tickets from Sheffield to Donny. For example, 17.57, 18.05 Northern, 18.12 TPE and 18.54 Cross Country can all be bought for those trains only in advance.
Same going over, 11.15, 11.32 and 11.40 all bookable.
You can also do the Saturday fairly easy if you get an early train Brighton - Luton, rail replacement to Bedford and direct train from Bedford.