How do I make a payment online?

I went to my reservation on the Carnival site. I want to make a payment but I cannot do it the same way as before. I would rather just apply the payment myself rather than calling my PVP. Can anyone tell me how?

When I click on manage my bookings and make a payment it takes me back to the original page where I cannot make a payment.

OK I got the page up but when I enter my info it says invalid agency. Is that because I booked with PVP?

You cannot make an online payment unless you booked online with Carnival. If you called a PVP or booked any other way, you have to call.

It isn't a big deal, it would just be nice if they'd make the website so that it would note this rather than giving some generic error message.

The above post is exactly right. I tried to make a payment yesterday and got the same message. I called and they said it is because I booked the cruise over the phone and not on line. But they took my payment in 2 seconds and it wasn't a big deal, but you do have to call Carnival direct.