So, it turns out the hardest part about the goget van rental was returning it.
The spot I picked it up from, was occupied but two other goget cars. They have a procedure, park nearby, take a photo of the vehicle in the spot and send the details.
I took a photo, text the details. Everything sorted.
My only issue was that they were goget vehicles, not cars that are illegally parked. Their assumption is that it will be your average car but it was car share cars. Their own. Parked in the car share spot.
No worries. The van was returned. I text the location details and the photo of the car in the spot.
It really was pretty easy.