I think with this game you don't assume anything. I thought games may not be played today as last night's game was not played. However Junior has run the match engine through previously in the morning so afternoon games are played as scheduled. So if you have the time please keep checking and if your pushed for time do your game tactics anyway.
You can still run into problems if you set up in advance before the night game because you might get awols and injuries and potentially mess up with your subs.
I do agree 100% with you when you say don't assume anything. I logged in 15mins before afternoon K.O to see if the night games had been played because I last checked at 4:30am GMT and it wasn't. As soon as I saw it played, I knew afternoon games would also be played as this has happened previously... Sucks that I had to rush and set up tactics for 3 different teams within 15mins but glad to see a rollback has happened win or lose because that's the only fair option.