There are ways to cruise spring break times and avoid the spring break scene. The biggest issues will appear on sailings of 7 days or less, especially 3 to 5 day sailings which are more affordable for families with lots of children who want to bring their friends. Also being selective on destination and cruiseline. There will be lots of spring breakers headed to the Bahamas and Caribbean. Not so many doing Europe or trans-Atlantic, Panama Canal or repositioning cruises or even Hawaii 2 week sailings from the west coast. Look for longer sailings, focus on Holland America, Cunard, Celebrity and other lines that don't attract families with children. Early March is indeed spring break somewhere in North America. Parts of Canada let out in February. Basically anytime from mid Feb to Easter vacation is time when school is out for many families. Then it starts again Late May through the end of August for summer vacation times. Holidays like Christmas and New Years are also times when kiddos are out of school. One of the reasons I like to book cruises in September through early December excluding Thanksgiving. Plan well and shop for the right cruise and right line and you'll have a great cruise without having to deal with 700 of someone elses kiddos under foot.