Originally Posted by ghtx
This is a good suggestion. But, warning: if you don't have the hopper then you can't go to two different theme parks in one day, even if you would like to use an extra theme park day to do so. (That's a common confusion.)
Good point, but to be more clear it is two different major theme parks (MK, AK, DHS, and EP), you can do as I suggest and use it the same day as a water/minor park.