The expedition runs only in summer and early fall. Otherwise it is rainy season, and the seas are rough and treacherous. The same applies to Amanwana, which is great, except that during rainy season they don't use the seaplane, and depending on the day, you can't even get off the island, not even for scuba diving, truly stuck if you are unlucky. Food and service and overall experience at Amanwana is tops. To me, best of the Amans for service and quality of the staff, followed closely by Amanjiwo. Amanpuri comes dead last for me. So go in dry season.

Haven't been on the expedition, but have seen the boat. It is very nice, has only 2 or 3 cabins, and fills up quickly. Very very expensive, something like 15 grand for a cabin for five day live-aboard, not including dives and such. I'm sure it is amazing, but there are other more modest ways to get there and still see the komodos if that is your objective. Someday I'd like to combine a rough expedition to Komodo and/or Rinca followed by a couple of days at Amanwana for a high-end relax.