Argus
even though an aircraft may have a "rapid descent" that does not neccessarily mean that the cabin had the same descent rate.
In all cases (other than an emergency) the cabin will descend at around 500 fpm, which is acceptable to all passengers who are not suffering from extreme effects of colds, sinus, tropical ear etc etc.
DJ is no different in these profiles than the rest of the aviation world (for obvious reasons).
If your relo's have had a problem, perhaps they should note what occurred and keep it in mind for their next trip.
(A trip to doctor to obtain a prescription for ear drops such as "soferdex" (sp?) may be a good start).