We (me, dh, dd-6.5yo & ds2yo) were there for 8 nights/ 9 days (but left early) in December...here was our schedule:
Day 1
Arrive noon at MCO
Lunch - CS at POR
Arrive MK at 3pm (in the middle of the parade!)
Dinner Chef Mickey's 7pm
Day 2
Breakfast Akershus (8am)
Morning Epcot
Lunch - CS at Epcot
Return to POR
Afternoon - Nap, swim at pool
Dinner Boatwrights
Evening - Late EMH at DHS
Day 3
Early EMH at AK
Breakfast - CS at Kusafari Baking
Morning - AK
Lunch at Tusker House
Early afternoon AK
Return to POR
Late Afternoon - Nap, swim at pool
Evening - DTD
Dinner - Earl of Sandwich
Day 4
Dd - Pirate Cruise at POR (everyone else slept late)
Late Breakfast - CS at POR
Late Lunch (technically dinner) - Crystal Palace
Rest of day/evening/night -
MVMCP
Day 5
Slept late
Breakfast - snacked in room
Morning - Swim in pool
Lunch DTD - Wolfgang Puck Express
Afternoon - DTD
Dinner - 1900 Park Fare
Day 6
Breakfast - CS at Starring Rolls
Morning - DHS
Lunch - Hollywood & Vine
Afternoon - DHS
Early Evening - Dispodcast meet
Day 7
Ropedrop at MK
Breakfast - CS at Main Street Bakery
Morning - MK
Lunch - Cosmic Rays
Afternoon - Epcot
Dinner - Le Cellier
Evening - Epcot
Day 8
Mom - DHS Early EMH/Epcot then Mega Mousemeet for Mousefest
Everyone else - Sleep in, CS breakfast at POR, swim at pool, nap
Everyone - Meet at MK, snack at Cosmic Rays
Afternoon - Magic Kingdom
Dinner - Whispering Canyon Cafe
Evening - Electric Water Pageant then POR to pack
Day 9
Breakfast - CS at POR
DME to airport at 11am
Does that help?
We didn't ever go back to the resort specifically to nap...but worked it in a lot into our plans. We did have ds nap on the go at times (we had a Beco carrier for him to sleep in..he slept there better/longer than in the stroller) but other days he just went all day. I would definitely take your cues from your kids.
I know many people get their little ones to bed before 8pm.. even at WDW, but our two hung until midnight both of our late nights!...and we had a great time!