Disneyland- Upstairs balcony of the Village house. The old trail behind BTMRR, BBQ when it was there. Tomorrowland Terrace. Main street RR station. Back line area to get Dole Whips.
MK- Pretty much same as above, except Dole Whips spot, Add the shop at the end of the Space Mountain. It has the charging stations and Air Conditioning. The trail from TL to FL.
DAK- it was under a deceit amount of construction in 2016. I did find the flame tree patio was an awesome find, I also found the Dig site a great spot to sit while my 10 yr old got her extra running energy out. I don't know if it was because the Asian jungle trek and the Rapids were down, but the walk way from there to Everest was shady and easy to sit on fence.
DHS- Echo Lake usually find shade at some point around the lake. Before the construction hitting the Coke Stand and getting spot near the Splash Fountain was easy going. Back Lot Counter Service has plenty of great spots to just go Oh my feet needed me to sit down.
EP- We need to go back to fully enjoy the world show case, but in Future World. The Land and The Sea pavilion has plenty of spots to hang and enjoy people watching. I especially always enjoy just outside with the Seagulls. Mine,mine,mine!