This is why we prefer staying at a DVC resort that has lots of activities and a Community Hall. There's so much to do around the pool all day that sometimes we hate to leave! But the kids are getting older so we probably won't do as much of the activities this time, but we always enjoy the trivia, family bingo, that sort of thing. Old Key West has been awesome for these kind of days.
We love MK at night. We like to arrive during the first parade and head over to Tomorrowland. We can usually ride everything we want and work our way toward Frontierland for the 11:00 parade. I've watched Wishes from the front of Pirates, behind the carousel, lots of fun spots.
Epcot Future World at night is beautiful and empty. It takes longer to walk from one pavilion to another than it does to ride something.
We're haven't been in the summer since 2010 and our plan is to focus on evenings. Pool, mini golf, shopping, maybe a single rope drop or two but mainly evening park time.