I have a small dog and I can’t be without her. I even fly with her all over, because I have fear of flying and she calms me down. Im going on the cruise soon, and I can’t imagine be without her for 7 days. They not allowed to have dogs on board except service dogs. They told me to find out about it on US department of agriculture website, but I didn’t find anything about it. Does anyone knows, how can I get my dog certified as a service dog?