Just got back from staying off site. Previous 2 trips were on site, Pop and Fort Wilderness The magic wasn't the same, not gonna lie ... BUT ... we are a family of 6 and we stayed in a rented townhouse in Crestwynd Bay, right next to Windsor Hills, 3 bedrooms, 3 bathrooms, full kitchen, washer/dryer, etc. We drove down, so we had our car. Parking spot right outside our front door. Really close to World Drive. It took us far less time to get to AK (super close!), Epcot and HS than it did from Pop and FW. We were in the parking lots within 15 mins of leaving the house. MK took the same or longer than the bus from Pop and the boat from FW.
So, while we would love to stay in the bubble, a rental makes more sense for our family in terms of space as well as cost and location.