Make sure you go into your interview fully prepared. Don't let any question take you off guard. As detailed on their career pages, some of the prerequisites for employment is that "all Royal Caribbean Group's brands' crew members are required to Pass a criminal background check," and need to "complete an extensive pre-employment medical examination prior to joining the ship. In most cases, the examination is at the employees' expense. The examination should be conducted through one of RCG's approved medical facilities. Once the medical examination is complete and approved by our corporate medical department, employees will be cleared to travel. This medical documentation will then be valid for two years. Your recruiter or hiring partner will discuss this with you in more detail." If you do have any marks on your record, now is the time to mention it. The more transparent you are, the more trustworthy you will seem. This also offers you an opportunity to offer context to those marks.