I still get up early on weekends because I have to let my dogs out. But afterward I can go back to bed, or I can enjoy a leisurely big breakfast (and then go back to bed if I wish) or throw in a load of laundry and do some chores so that the rest of the day is free. Every other week I go out to breakfast and have a big feast - Belgian waffles, omelets, a stack of pancakes or whatever...it is so nice to just take my time and not be on a schedule.
I live pretty close to the assembly hall. Often on the weekends I pass by it and see the parking lot full. All those people are sitting there - in their suits and dresses - wasting the whole day while I'm either doing something fun or getting errands done so I can have fun later on.
Other religions have weekend activities, but they do not take up the whole day. Those churches realize their members have other - important - things to take care of on their days off from work.
The Bible says, "Keep first the kingdom." It does not say, "Seek only the kingdom," and do nothing else.