Your cruise line or travel agent can alert you to some of the cruise rules, regulations and restrictions that you need to know about for your next vacation at sea, but you can't count on them to tell you everything. It's best to educate yourself on the latest travel guidelines, including any travel documents required, before your next sailing -- especially as getting things wrong can lead to more travel hassles, extra expenses and possibly being denied boarding at the pier.
At best, the overview provided here is a snapshot. You'll want to double-check the current guidelines (with a site like travel.state.gov for U.S. citizens) as they pertain to your specific travel plans. To that end, we've provided you with your very own toolbox of internet resources, in addition to our general overview.