Yeah, look for the Red Flag and it goes direct.
The only problem I had with the boat transportation (the direct to MK) is that it only starts a half hour before the park opens. So if you have an early breakfast (CRT or whatever) you either need to bus it or take the boat to the Contemporary and hop the monorail. Other than that the boat was great, we never used the bus once. (For MK to WL trips)