I've been on four E-class cruises and I feel like I'm in a suite, I have always been in sunset aft cabins (best cabins IMO on any ship) I have eaten at all the specialties (from what I've heard, much better than Luminate) I do have two cruises booked for the future in a Retreat cabin, but ONLY because it was only about $700pp more than a sunset aft cabin. To me, paying $5-10K more to be in a sky suite is not worth it, I'd much rather take another/longer cruise with those funds. Just my opinion...