Seaport tax depends on which ports ship sailing to. Could be ranged from $80/pax for 6D/5N to as high as $150/pax (maybe have increased) plus $21/pax per night ($105/pax for 5N for Balcony and lower cabin category). 4 paxs could be about $780 plus buy-in 6k (5.4k for play but don't think can be shared by the 4paxs).
If you are lucky to roll all NN to cash then cabin is free only pay taxes.
I know a bit programming and done a little monte carlo simulation using house edge of 1.06%. Not sure whether this 1.06% is accurate as this is baccarat and i don't know whether the rule onboard is the same
On a NN chip of 10000 and a bet of $100, the expected value at the end is $9790. It not (1-1.06%)*10000 because you need to bet more than $10,000 to change all NN chip into cash chip.
The standard deviation is $1390. 95% of the time, you will get back 10,000-2780=7220-12780
This scheme is a good one if you have time to go to Genting cruise again
You will need to remember you lose 10% deposit. You have to calculate whether you are better off losing the deposit or just keep on gambling to get back the deposit