Our experience on the Dream in December 2024:
We went with my FIL to drop him off at the designated location (I think the Buena Vista Theater). We were not first-thing in the morning, we ate breakfast and took our time, so a lot of people had probably already disembarked. They enthusiastically offered if any of us wanted to wait with him and have a ride, but the three of us opted to do the walk. It took us about 12-15 minutes (?), I'm a slow walker. We waited about 5 minutes at the other end and he pulled up. Easy peasy.
On the way back, it was just he and I while DH and his mom walked the nature trail. There was no problem with me hopping on the cart for a ride back with him, they didn't even ask.