Yes! There will be a shuttle provided leaving from Smugglers Notch to the site. Times of shuttle are TBD! (If you drive to the wedding and feel unable to drive home, you also can take the shuttle back and pick up your car the next morning).
We recommend staying at Smugglers Notch if you can. The road between Smugglers Notch/Jeffersonville and Stowe is narrow and can get shut down, so this may impact how quickly you can get to the venue (and if you want to drive yourself).