“I will be somewhere that doesn’t have an internet connection for a few days.” is the only explanation needed. All other details are superfluous.
Though I think “my cat is unwell, therefore I have no internet” is also perfectly acceptable. As we all know, the internet runs on cat power, so how can you possibly have internet if your cat isn’t well enough to generate internet particles? :P
Depending on when it is in my timezone we might be doing Halloween with the kids. But that’s between 2021-10-31T23:00:00Z and 2021-11-01T04:00:00Z (4pm - 9pm my time).