You are correct. You'll be able to walk on to BTMRR, Splash Mtn, PotC, Space Mtn, HM (7 Dwarf Mine had a scosch of a wait). To be honest, the only time I waited for anything during
MVMCP was at Hall of Presidents. And that's just cuz you have to wait in the queue for the previous show to end.
The fireworks and the accompanying music and narration by Jiminey Cricket is really moving.
As for the characters, except for 7 Dwarfs and Jack, there is little to no wait. And check your map to see where they'll be. They will be scattered throughout the park.
And congrats on Akeshus. There is good interaction there. And if you are going at breakfast, make sure to have the cheesy potatoes. They are habit forming.