With WoC coming to DCA (see my signature line) and GRR FPs being a big unknown, and ToT FPs down all summer, and with the possibility of Paradise Pier rides opening early and closing early because of WoC, even a DCA vet like me has no idea yet how we are going to tour DCA this summer. We will know a lot more in June once WoC actually opens and can read what is actually happening at the parks.
In general, DCA strategy involves getting Soarin FPs early, getting GRR FPs especially in the summer, riding Monsters Inc early (one of the first few rides), and either doing TSMM first thing or late afternoon/evening. California Screamin tends to be pretty easy to get on (lines 20-30 minutes) and we work it in when we are back doing TSMM. The Animation Studios are good any time of day and with kids you should spend some time there. If it is their first time I would suggest 90 minutes including seeing Turtle Talk w Crush. Also see Aladdin and realize it does not show every day - but there are rumors it may this summer.