Since I stay offsite, just do two Disney park days, and don't get hoppers, I make sure to go on a day when the park does not have morning extra magic hours. Sometimes the park I pick is recommended and sometimes it's neutral. It's almost never the park to avoid. We love Sea World, so my planning involves doing Sea World as our first park and doing Sea World with the second day free as our last park. Then I scehdule two Disney Park days in usually trying to fit in two down days in between busy park days and making sure those aren't on morning EMH days which are typically Unofficial Guide park to avoid days. I let my son pick which two Disney parks he wants to do, and usually he'll pick the ones we haven't been to as recently, but not always.