suites and loyalty Star Class and Crown & Anchor, from experience.
Star Class is Royal Caribbean's top suite tier, and the headline is the Royal Genie, a personal concierge for your group. We've sailed it on Harmony of the Seas and on Oasis of the Seas, and both reviews cover what the Genie actually did and whether it was worth the money. If you're comparing Star Class with a regular suite, that's a conversation worth having before you book.
Crown & Anchor Society is Royal Caribbean's loyalty program, and you start earning on your first sailing. On Allure of the Seas our Diamond Plus drink vouchers covered us, so we skipped the drink package. Check your account for casino offers before you sail, too. When you book with us, your loyalty number goes on the reservation so the nights count.