While I'm hesitant to get wrapped up in another Zynga game, this Treasure Isle promotion - and the promise of a potential Stamina refill every 16 hours is tempting. Plus, you can earn the Tiki Mask, a nice Armor item with 62 defense:
The Stamina refill was the big draw in the prior version of the Zynga Poker promotion. If you time your refill correctly, it's easy to level up frequently, even with the lower XP-to-energy and XP-to-stamina ratios.
If you try it out, let us know how it works for you!