Apart from this, try to limit the details you provide in the message. You just need to inform that you are going on a vacation; you need not give the exact plans. Also, refrain from making it funny. It can be easily misinterpreted and leave a wrong impression.
I used to work with someone who had a message telling people she only checked her email twice a day. You pretty much needed to call her if you needed anything outside of those times. (She worked in a remote office.) I think she had read one of those books on efficiency that recommended scheduled email time. But there were problems with this: 4. My department often had to email attachments or text to illustrate our questions/concerns. And we were on deadlines. Reading a page of text over the phone was not an efficient use of anyone’s time 5. She did outreach & was often out of the office on site visits, trainings, or travel to these places, but never ever set her OOO for these, because she was “working.” However, she was effectively not available to read emails from other staff until after hours on those days.

The exact dates you will be away.The reason for your absence. This is not obligatory, but bear it in mind. The thing is, people might still attempt to get in touch with you if you’re on a business trip or at a conference. They are less likely to try to contact you if they know you’re on vacation.The people who can assist a client while you’re away. Provide names, phone numbers, and email addresses so that colleagues and clients can keep in touch in case they need urgent help. It makes you look trustworthy in the eyes of the recipient and strengthens your working relationship with them.
3.( مرحبا بكم في .John Doe AG مكاتبنا في برلين مغلقة الآن لقضاء العطلة. يمكنكم التواصل معنا في أيام العمل من الاثنين إلى الجمعة من الساعة 9 صباحا إلى الثانية عشرة زوالا ومن 1 زوالا إلى 6 مساءا. للاستفسارات العامة يمكنكم أيضا أن ترسلوا لنا رسالة عبر