Yeah, I thought about that too. Seems odd to roll it out to a couple resorts and then let those guests go to resorts that aren't testing it yet. Then what? Have the van return to the test resorts? I would assume they'd give the guest a way to contact them to get a ride back but then again, I learned a long time ago not to assume anything when it comes to Disney so....
I try to remember it's Day 2 and we've really not heard any first hand reports here. I've seen one on FB on the WL group but that's it. There the poster said the Van driver told them they could stop anywhere they wanted, as many stops as they wanted.