I recently found a offer for $50usd for a black Wristband to the Grand Oasis. I was just wondering is this is a good deal? What does the Black wristband (Grand Oasis) get me that the purple (Oasis Cancun) won't? I am booked for the Oasis cancun for 5 days. March 13-18. I have the ability to buy four Black Wristbands. Thanks Guys for all the help!!!