You can always ask, but I doubt they will let you board before anybody else just for this reason. And if you want to write a fair review, it is always better to not let the crew know that you make a review because they may change their behavior. If you fly Y, just queue early at the gate to be among the 1st to board. But you won't be the 1st in the cabin, as SkyPriority pax will board first.