Can I move an imported camera track in Maya without manually changing 500+ keyframes? I have a match-moved camera track from Nuke but it's in the wrong place in my scene/environment, is it possible to select the camera's track and manipulate it without having to manually edit the 501 keyframes that make up its movement?

Would it be easier to move the whole rest of the scene, or is there an option I missed when creating the track that would orient/position it correctly?
Select your camera, locators (if exported), and anything else from Nuke. Group them all together with ctrl+g and modify that group as a whole.

You can scale uniformly (but not independent axes), rotate, and translate.

Often one trick is to snap the pivot point of the group to a specific reference point (hold down d and v then drag to the reference point, and then snap the group to the corresponding point in your scene (just hold v while dragging). Then rotate and scale to align the rest of the group.

When finished, you can simply unparent anything not animated with shift+p, but animated objects like your camera will need to be baked:

To bake the camera, duplicate it, unparent it, then parent-constrain it to the camera (Animation menu > Constrain > Parent Constraint). Then bake the keyframes (Edit > Keys > Bake Simulation) and you can then delete the constraint and the original camera.