Just back yesterday. DH and I twice walked over to BC and grabbed an Uber from there, rather than hoof it back to front of park.Yes, I didn't think there was direct vehicle access at the IG, but I couldn't remember. The goal is to avoid the mad post illuminations exodus and the wait for WDW transportation back to the resort. I think that the walk to BC and a pickup from the Minnie Van there might be the way to go.
Thanks for the quick responses.