I have a Kindle Fire 2nd generation and can not change the date to a different month or year. All I can do is change the time forward or back. While changing the time will make the Sims think it's time to go to work, it has not speeded up cooking, planting or any other activities. Also, it hasn't given me any LP or Simeleons.
You can get the LP level up reward again by removing the Sims game from your Kindle then re-installing it with your previously saved game.
Anyone have any cheats for a Kindle Fire?