Basically this. I used to handle support tickets myself at an old job of mine. We were completely shut down on weekends, across the board. Unless the boss felt like logging-in out of boredom, everything waited 'til Monday morning.
As I understand it, that's pretty much standard fare unless there's a retail storefront somewhere, which the vast majority of software businesses don't have.
One of the support forums I moderated way back when, the software company rolled out updates on friday afternoon.
And then left until monday morning.
And I seem to recall my google adsense verification involved getting a postcard in the mail and having to type in what was printed out on the card.