If a special event is longer than 2 weeks, please have weekly changes. Four weeks was too long for the OtherSpeck as designed.
If each week there was quality of life improvements (don't have to go back to base to type in next location, or improved random destination features, etc) or new gameplay (different mini-game, other ways to gamble, etc) then the 3rd and 4th week would have been more engaging and less grindy.