The first scene is set in a suite at the Disneyland Hotel the year it opens. Slides and film clips show off the park as it's described.
In the second year it's 1969. More updates to Disneyland: Tomorrowland from '67, Pirates, the Haunted Mansion, etc.
In the third scene, set in a Grand Californian suite overlooking DCA, it's present time or a year or five earlier (before it's updated),
and in the final room it's Disneyland in the future.