There are lots of free voucher books you can pick up around the bars and shopping areas collect them all they have lots of deals 2 for 1 in them including eating out and adventure parks
Have a great time
The cheepest way that I have found is to purchase them on line. You can get tickets for the number of days you plan to visit the different parks and you can get tickets for specific parks. You can also get meals included if you wish to
eat at specific restuarants. The bad thing about that is that you have to be there at the specified time on the ticket to get in without waiting. The web site for Disney is very helpful in helping figure out what tickets you need and for which parks.