Darkfinst
Newcomer
Me and my friend were about to leave the Stardew Valley Fair and I was in the 'waiting for other players' screen waiting for her to come. Then I canceled the message when she wanted to leave so she could not leave. But somehow she left the Fair while I was still at the Fair and time did not start moving for her after leaving. So as long as I did not leave the Fair she had an infinite amount of time. We did not check if she could still access the town or other locations but when i tried to leave the game continued as if nothing happened and everything worked perfectly fine. Might work for the other Festivals as well.