U.S. regular, full-time staff members may take three floating holidays during the calendar year. These floating holidays may be taken on days of your choosing, with your supervisor's approval.
The people who never change their holiday OOO message or only include half the information, if you’re lucky. I had one sent to me once that was along the lines of “I’m on holiday until August 12th and then again from August 24th.”

If your request is urgent, there’s no use sitting idly in my inbox. So please send your request to [Contact Name] at [contact email]. Whether you prefer to stick with something simple or have a little fun with your holiday out-of-office message, it’s important that you always make sure to at least include the basics: your return date and an alternative contact people can reach out to for urgent matters.
About the “overshares”: You linked to a previous column that mentioned this point, “Sometimes the over-sharing of plans can even come across as suspect — similar to how when someone’s calling in sick with genuine illness, they usually just say, ‘I’m going to be out sick,’ but fakers will generally give you a long list of overly specific symptoms, like they feel they have to convince you.”