Just got back from my trip which was booked on Delta's 2 cpm promotion. What a deal and what a time we had. Was able to swing 2 round trip tickets in main cabin + 3 nights at St. Regis Bahia Beach in Puerto Rico for 145k miles. At the time when I booked the cash value for this was over $4k. The package also included free breakfast and waived the resort fees ($80 a day) plus the hotel upgraded us to a suite. All MQMs/RDMs/MQDs posted as part of the exception fare process. Wouldn't hesitate to use Delta Vacations again!