We have stayed at the MGV the last 2 years in a row and really loved it. From the MGV the most direct route to WDW is going south on I-drive. To get on the I4 going towards WDW you have to go a fair bit out of your way, there is no straight access which is why it's more direct to take I-drive S. When you are coming back from WDW to the MGV take the I4...this is faster. You can exit the I4 right in front of Seaworld and get back to the MGV.