[CMB_polarization]

They just have to figure out how to slow it down and stop at the destination.

[roadcat]

Easy to do. Have a laser setup on Mars to decelerate the craft as it approaches Mars. The laser on Earth pushes it halfway, the laser on Mars takes over halfway to slow it down. However a problem for the passengers is evident:

Finally, some experts cite the issue of time dilation,... time slows down for the spacecraft ... while space travel takes 30 minutes, it could equal a decade here on Earth.

I don't think it'll eat up a decade of Earth time, else why do it, but it'll certainly be a lot shorter than 9 months Earth time.

[Ozark Tom]

Intercept trajectory will provide the stop just fine. Added bonus of a light show no extra charge.

[central_va]

They just have to figure out how to slow it down and stop at the destination.

Minor detail.