As a data point, holding down the shift key + using the arrow keys at the same time also works for moving the camera viewpoint. It's not as fine grained as the

As a data point, holding down the shift key + using the arrow keys at the same time also works for moving the camera viewpoint. It's not as fine grained as the right mouse button, but it works "well enough" as an alternative for setups without a right mouse button. :)