You probably took a bus to DTD from the CR. There are no buses between DTD and any of the parks, so your recollection can't be correct (mine not be either after a long dinner and plenty of wine). That still can be a long trip and quite an expedition. I am one who tries to take Disney transportation whenever possible, ande even I would use a cab for resort-to-resort trips late at night unless I was close to a park that was still open.