I don't think weekends & vacations would work with a multiplayer game like this. Take for example 20 people in the game, 1 person decides to take 10 vacation days. So now all 20 people have to wait the 10 days. Opps, player 2 has Monday & tuesday set as weekends. Playeer 3 has wednesday & thursday as weekends. Player 4 has Friday & saturday set as weekend. Player 5 has Sunday & Monday set as weekend. All of a sudden, no move will every be made!

Once we start getting more pond games, there will be different times and such which will help out.