That's been my life for the past 20 years. I get a 7x24 rotation every 3 weeks. It's been as infrequent as every 6 weeks, but now it's ever third week.
I get paid about an hour for each weekday I'm on standby and about 2 overtime hours for every weekend or holiday day I'm on standby.
After hours are like any job with overtime. Once I hit 40 hours for a week, any hour worked, standby or otherwise is at time and half or double time.
Same deal, have to be available anywhere from calling a customer in 10 or 15 minutes to a four hour response time.
This means two cars to restaurants, watch movies at home, not in a theater, and so on because after 20 years, I'm a firm believer in Murphy and that he was an optimist.
If I have to go out to a customer site, it's usually at least two hours given I have to get or wait for parts, not to mention spend time looking at the service request to see what's going on.
Heck, it doesn't even have to be a week of standby. I rolled out at 6a today and got home at about 8:30pm. Customer site 130 miles away and installed 13 servers and three switches.
And I'll be returning as we have another 5 trays of ZFS storage to install, plus one of the servers needs a replacement MB as it wouldn't complete POST with all the memory installed. (Would run fine on 1/2 of the installed memory, no matter which DIMMs were in the slots, so not a DIMM issue.)
Like I said, Murphy. The one I did 10 days ago 17 miles from home went without drama. The installation, for the same customer, 130 miles away, problems.
Comes with the territory in my field.
Even if I move to a regional job where I don't roll out, I'd still pull on-call rotations answering FSE questions in the region. Ditto for being a manager, I'd end up with on-call rotations for escalations.
I think I like it where I am as at least I'm the one at the keyboard or turning the screwdrivers. Satisfies my control enthusiast nature.