How do I make my SSRS report print to a PDF without the content getting cut off?

1. Open the report in Microsoft SQL Server Report Builder.
2. Right-click in some dead space and pick: Report Properties...
3. At the dialog that appears, set the Orientation to Landscape, the Paper size to A4, and the Page units to Centimeters. Obvious, the landscape orientation is what is most important here.

Content that still gets cut off will now wrap onto a second page. Printed pages could be set side by side with each other in a horizontal row to show the big picture.