During late afternoon and evening, traffic can back up into Hotel Blvd from people driving slowly trying to wait to get in to the crowded parking lots or confused about where they can and can't park.
That can make it a little hard to get in and out of SSR and Hotel Blvd., and of course it's slow going down Buena Vista Blvd all past Downtown Disney.
To avoid all this, drive in and out via Bonnet Creek Parkway and Vacation Club Way (goes past Old Key West).