Add Orbit, Zoom and Pan icons to the 3D View. Dragging on any of these icons will enable 3D View manipulation without using hotkeys. Hovering will reveal the hotkeys.
Often times, a 3D artist will show off a 3D model to an art director, director or someone else who is not necessarily familiar with the given 3D app. These people will want to navigate in 3D without remembering complex hotkeys.
Also, new users will more easily be able to navigate in 3D space and learn the hotkeys by hovering over the icons.