We are booking our 2nd cruise finally (1st one was 11 years ago). This time we will have my kids and in-laws with us. My MIL gets very anxious about everything these days. Although the cruise isn't until next July she has never been on one and doesn't know what to expect and is mostly concerned about what clothes she will need to bring. I explained that there isn't a formal night on a 4 night cruise so she really doesn't have anything to worry about. Am I correct? Bathing suits, casual summer clothes for during the day and something a little dressier for night (like going out to dinner at home) and that's it. Is there anything else new that I need to prepare her for? What happens on pirate night? Will we need anything for that? Thanks so much for your help!