GoofItUp,
Yes, the transportation from POR (and POFQ) is by bus. If I recall, it took about 15-20 minutes to get to the various parks. We usually allowed extra time just in case (especially for those Priority Seatings!).
Depending on the time of year you go, the bus service can be crowded. But just remember that they'll send another bus if one is full. When we go again, I'll probably choose December. We were right around a holiday so it was busier.
We did pay a higher price for the king bed. Actually we had the Fairy Tale package that was 7 nights for the price of 5 with passes included for the duration of the stay. When I've priced the similar package this year, it's higher. To me, it was worth the price for the king bed. I don't think the room is any bigger and it didn't have a special view, but I have read that some king rooms are on the corners and have 2 windows. I really felt that our room was large - both of us thought it had a period feel about it and didn't feel like it had the typical sterile hotel atmosphere that a lot of normal hotels have. There was a lot of detail in the decor and furniture in the room.
When we walked out of our room, the walkway outside overlooks a beautiful fountain area. It was really relaxing, and as you can see from my photos, I kept posing there!
I personally think that a couple in their 20s would enjoy POR. I liked the landscaping, the far-away feeling like you're on a plantation, and the staff was wonderful.
Any more questions - I'll be glad to help.