To give a little background on that guideline about “no Sunday work”:
First, remember that Jesus said the Sabbath was made for man, not man for the Sabbath. What he meant by that is, people are not supposed to spend Sabbath worrying if they somehow did some work by like, cooking a meal or having to catch up on school work or some other thing that still leaves the person time to go to Mass and spend time with family/ friends. Not to mention those in essential services like first responders, hospital staff etc, and even those whose jobs aren’t as essential but are good things to have on a family day, like restaurant staff, grocery store clerks etc.
Second, the main point of the rule is to make sure that people take some time/ get some time off to worship and relax. In Jesus’ day and for centuries thereafter, people who weren’t the idle rich worked pretty much every day. Slaves and servile workers rarely if ever got a day off. Their employers just expected them to work every day. Establishing this rule was basically the only way Jesus could get people to not only take time off themselves for worship and relaxation, but also to give their workers the day off. Our culture today is very different - workers can usually get time off to go to church and to relax a little, work in general is not as strenuous, and there is a Saturday evening vigil Mass for Sunday obligation.
The way we normally interpret the rule nowadays is make sure you fulfill your Sunday Mass obligation, pray, and have some family time, or if you don’t have a family, some fellowship time. Then don’t worry about what you’re doing the rest of the day. Some people choose to avoid certain activities, like they don’t do any work for their job or school on Sunday ever, or they don’t patronize restaurants or businesses that day because they don’t like workers being made to work on their behalf. But these are choices people make, not Catholic requirements.
