My friend does this. She's a single mum, DC are twins and are 17. When they go to their dads eow she literally fills every hour of those weekends with plans. Booking/ scheduling people in, seeing who's available then holding them to lose plans which were made as a rough/maybe type of thing. I can understand wanting to go out maybe on a Fri/sat night with friends. But plans all weekend - every weekend she's alone - fri night & Saturday and Sunday in the day & night too ?
She can obviously do as she pleases but I just find it odd