I suspect that the codes of conduct would continue to be observed so long as they proved effective in maintaining good order and discipline among the expedition's members. Such codes are usually based on experience as to what behavior best facilitates a professional environment in which to achieve mission goals. Individuals may not need the codes to behave professionally regardless of circumstances but that varies from individual to individual and allowing some but not all relief from the rules is also counterproductive. Then again, a writer can make just about any case and control the outcome. :-)