? About adding non exp. days to tickets

[mickeys friend]

Does anyone know how much it would cost for 1 adult to upgrade their 4 day hopper from the free meal package too:7 or 10 day non expiring adult ticket if it was done on our first day their (with the 4 day tickets)?We are thinking of splitting our stay and staying longer and just trying to come up with some figures.Not sure how much the 4 day hoppers that are with the package are worth and what are the prices of a 7 or 10 non expiring ticket.Thanks for any help.