I'll be one of the ones to try on Monday. Personally I'm going to head for RSR, then whichever looks shorter between Luigi's and Mater's (if it hasn't taken me the full hour to get through RSR), then line up for my RSR FP, and hope to hit the third Carsland ride right after opening.
Even if Carsland isn't open for the DCA EMH, my DS5 would be thrilled if TSMM was, he could go on it 4 or 5 times in that hour, which would still be worth waking up at 6:30am for.
But it seems highly logical that Carsland will be open for the express purpose of getting us Resort guests into and out of Carsland ASAP.