We just went 2 weeks ago. We did 2 days of SeaWorld, then DC. Someone on this board did it the other way around and recommended SW first. They said that after the kids swam with the dolphins, they were not really thrilled with just being able to feed them at SW. We surprised my kids and told them about DC after our 2 days at SW. DC was the highlight of our 10 day trip. Have fun, I am jealous - I'd love to go again!!! DC is beautiful!