I think it would absolutely be worth it, especially if you have park hopper tickets. My daughter (14) and I took a trip with just the two of us this past New Years. She did most of our trip planning this time so we spent tons of time at Epcot which is her favorite park. It was wonderful being able to just walk over to Epcot anytime we wanted. We tended to end a lot of days there no matter what park we visited earlier in the day. It was great for dinner, snacks, shopping, or just looking around. Also, it is great being able to walk (or take a short boat ride) to the Studios. We spent an unplanned evening there that we really enjoyed. I don't think we would have made the effort if it had involved riding buses. Also, we enjoyed the street performers at the Boardwalk - and of course the ice cream at Ample Hills.