Just curious, since you said you're doing a resort only trip, what other plans to do you have that make you concerned that Disney transportation will take too long? We did a lot of resort hopping for meals on our last trip (even though we went to the parks for some amount of time every day). We were at AoA and would take the Skyliner to DHS and then grab a bus to whatever resort we wanted to go to from there. Super easy and didn't really waste much time -- no lines for the Skyliner at that time of day and very short (less than 10 minutes at most) wait for buses at DHS. We drive to Disney, but never use our car once we're there. We could walk out of our room and be at the GF in 30-35 minutes using the Skyliner and bus. We *might* have saved 5 or 10 minutes if we drove ourselves, but we also could have been turned away at GF and had to go somewhere else for lunch. If I was staying at the Poly, I'd just take the monorail or boat (depending on when you're there -- I know the dock is closing for a few weeks next month) to MK and take a bus from there to whatever resort your heading to. While it *might* take a few minutes longer, it could save you a lot of time because you're not going to get turned away at the resort for any reason. We've also taken a bus to DS and then taken the boat to POR and POFQ to have lunch at those resorts. It might not be the most efficient way to get there, but if it's not eating in to park time it's a fun thing to do. If I was doing a resort-only stay, I wouldn't really care how long it would take to use Disney transportation to get around because I'd be looking for ways to fill my days. Using Disney transportation allows me to sit back, relax, and just enjoy the ride rather than driving in traffic, hoping to be allowed into a resort, and then finding a parking spot. YMMV