No problem! You can simply put your Amazon store into vacation mode and this will stop your orders while you're away. In order to do this, login to your Seller Central account, hover over settings in the top right corner, select Account Info, click the blue link that says Going on vacation?. Next to Amazon.com select Inactive and click save.
Now you can go on vacation without worrying about your Amazon orders! Bon Voyage!
Visit this link to learn more about vacation settings: https://sellercentral.amazon.com/gp/help/G200135620
Note: you must be logged into your Seller Central account to view the above link.