With the holiday break season in swing now, Lightning Lanes are tougher to come by at Walt Disney World. Slinky Dog Dash has sold out within 5 minutes the past two days; the big 3 rides at EPCOT have been gone by the park opening plus two hour mark.
Keep track of it all on https://www.thrill-data.com/lightning-lane/wdw
Use this data to help set priorities at different times of the day.