Board Thread:Casual Discussion/@comment-31.221.86.178-20160411141003/@comment-26561761-20160411185736

This type of mini-events were first introduced with the Thanksgiving 2015 Event. From my experience then and what I read of other players regarding the following events that followed that format, (Deep Space Homer 2016 Event, Valentine's Day 2016 Event): You have until the deadline (in this case March 14th) to reach the last part of the quest line (We Didn't Start The Fire Pt. 9) in order to get all prizes. Once the deadline arrives, no more parts will trigger. In your case, if you can't finish part 4 before the deadline you can't advance to part 5, however, you can still work in completing part 4 that is still there for you until you finished.

During Thanksgiving 2015 Event we had NPC's turkeys spawning in our Springfields. When the deadline arrived, no more turkeys spawned, so it was harder to finish the part you were stuck then. It seems reasonable that the same happens here, with fires no longer spawning once the deadline arrives, that would make only firemen be able to get you the medals to complete that part.

St. Easter 2016 Event followed a format seen with mini-events before Thanksgiving 2015 Event, until a quest line kill-date is assigned, it will remain active and you'll be able to continue it until then. Burns' Casino 2016 Event correspond to a. Everything related to them that rewards you with event currency, comes to an end at most once you update with the takedown update of the event (app-store update), in this last case specifically, some players said that after the official ending date, they were no longer able to get prizes with currency collected, they were only available for donuts, which is something first seen in the Casino Event.

It ended being more convoluted than I expected, I hope it can still answer you questions to a certain degree.