Hope you have a great trip!! Hubby and I are booked for the POR in May and are looking forward to it as well!! We stayed at the Coronado Springs before, but, we want a hotel that fits our needs a little more this time (the CS is nice, don't get me wrong, but it felt more like a business trip type of hotel...we even saw Janet Reno there for a conference)
You will be FLOORED by how easy it is to get around on Disney's transportation system. On property is definitely the way to go IMO!! (not putting anyone down that doesn't stay on property, Disney is great no matter how you go)
Hope you have a wonderful trip!!!!!!!!!!!!!!!!!!!!!!