I think that you have to get out of the entire "YC mindset". The YC pampers you by making you feel special among a vast crowd. They emphasize this with the private decks, lounges and restaurants.
Explora, like most of the luxury lines is far more egalitarian - everyone is treated the same, that is - fabulously ! Better food, better restaurants, few announcements and a well-travelled crowd.
I wish that I could explain it better - It's an overall quieter, more refined and relaxed experience. No real lines, no noise. Definitely no bling! My expectations of a private island were minimal.
It was just nice to pull up to the dock (no tendering), walk off and have a relaxed day with friends.
We were literally seated and chatting four minutes after stepping off the dock. The true luxury is and was space and no fuss.