Thank you all for the inputs. I haven’t made any booking yet. My initial plan was to book for 6 adults + 2 kids but the quote of 29K is absurd..
When I do the mock booking online for the same date cruise, for 2 adults, total is 17K and for 4 Adults, the total is 19K. This gives me the impression that each additional adult needs to top up only 1K. RC confirmed kids will sail free (just need to top up taxes etc).
RC’s quote of $29K for 6 adults +2 kids means they are charging the 5th and 6th adult 5K each. Unfortunately I can only select 4 adults online so can’t see the cost breakdown for 6 adults.