Our NCL cruise ship has day 3 in Germany, then day 4 at sea, then day 5 at another port in Germany. So far, NCL customer service says we can not skip the sea day and rejoin the ship on day 5. Why not? If I missed the ship accidentally, wouldn’t I get to rejoin at my own expense at day 5 anyways? I’d love to spend the time in Germany instead of at sea. (US citizen). Thank you.