Perhaps you didn't see this posted in the 'McCain will bring an end to Conservatism' thread:
"McCain was kept at the Hanoi Hilton from December 1969 until his release, along with all the remaining POWs, in March of 1973. During this time, T translated all the Vietnamese interrogators’ notes and reports regarding John McCain.
According to T, they reveal that McCain had made an “accommodation” with his captors, and in exchange, T’s father saw that he was provided with an apartment in Hanoi and the services of two prostitutes. Upon returning to his prison cell, he would say he had been held in solitary confinement. That may be why so many of his fellow prisoners said later they saw so little of him at Hoa Loa."
From Wiki.....
McCain was immediately offered a chance to return home early:[35] the North Vietnamese wanted a mercy-showing propaganda coup for the outside world, and a message that only privilege mattered that they could use against the other POWs.[39] McCain turned down the offer of repatriation due to the Code of Conduct of “first in, first out”: he would only accept the offer if every man taken in before him was released as well.[41] McCain’s refusal to be released was even remarked upon by North Vietnamese officials to U.S. envoy Averell Harriman at the ongoing Paris Peace Talks.[35]