Sorry know this has probably been flogged to death but the choices are confusing me.

We don't need 14 days in one parkland. We don't need the swimming options for Disney, we just plan to visit the parks maybe once and MK and Epcot maybe twice. That is the plan. We also plan to visit Universal maybe twice, and Seaworld once.

What would be the best Disney tickets to get please. Or should we pay on the day at the kiosk?