Is this math correct??

[TheLittles]

So I know I cannot be the only one who has ever needed more time to pay off their trip then the due date. So, I downgraded my trip from deluxe dining to normal dining, paid it off, and will upgrade it in a few weeks. I know that when I do upgrade it I have to pay the full amount. So what I am trying to figure out is how much it will be. There will be five adults. My math is, if I paid 65 already and I have to pay 110 for the deluxe then just subtract the difference. We are staying seven nights. I am coming up with that I will have to pay about1575 when I call and add deluxe. Are there any fees for upgrading it or any extra charge I'm forgetting? Has anyone done this?

 

[Cold71]

Your math is good. There shouldn't be any sort of fee.

 

[purple figment]

There is a $50 change fee once you are within 45 days of arrival, but since your total package cost increases the fee is usually waived. If you wait until within 2 weeks of arrival day there is a $15 paperwork fee that you will have to pay.