Offsite for sure.
For our upcoming trip, we are paying the same nightly rate for a 1200 square foot two bedroom, two bathroom villa with a full kitchen, laundry facilities, three flatscreen TV's, and a private screened in balcony as we would a 260 square foot room at POP. The resort has seven pools, multiple hot tubs, onsite mini golf, basketball courts, and multiple playgrounds.
We save so much by staying offsite (a two bedroom, two bathroom villa at Saratoga Springs is $5562 for our dates according to the quote I just ran....our villa at the Sheraton Vistana Resort is $120 per night, for an 8-night total of $960) that a car rental is easily affordable. We much prefer renting a car to squeezing onto a standing-room only bus next to a plethora of hot and sweaty strangers, and grabbing our vehicle and departing directly for our resort sure beats waiting to take the Magical Express from the airport. In addition, the car rental means we're not held hostage to Disney for dining and shopping, and can go exploring the Orlando area for other fun things to do (yes, we are one of the oddballs that believes there's a worthwhile world beyond the Disney parks). We get to do a beach day, visit Tampa, hit the outlet malls, whatever we want. With a $4600 savings over similar accomodations at SSR, we easily pay for our vehicle rental, parking charges, and gas......and our airfare, meals,
attraction tickets, and souvenir shopping. So very much more for your money.
We don't enjoy being crammed into one tiny room with a single bathroom. We don't do that at home, and I want my vacations to be as comfortable as (or better than) life in the "real world". While we won't use our full kitchen for cooking (another thing we don't do on vacation) it sure is nice to have a full sized fridge for keeping water and other drinks cold and for stashing leftovers from our dinners out.
Strangely enough, having laundry facilities in the room (rather than making the pilgrimage to the guest facilities at the Disney resorts) is one of my favourite perks. Coming home with all clean clothes is pure indulgence. Its hard enough dealing with the end of a much-anticipated vacation, but its worse when you have to come home to a week+ worth of dirty clothes.