That reminds me of the chaos that ensued in my state in the early days of Covid-19 vaccination when they were still having centralized systems where the elderly

That reminds me of the chaos that ensued in my state in the early days of Covid-19 vaccination when they were still having centralized systems where the elderly could book an appointment. Of course, they had way more demand than supply but still insisted on First Come, First Served, so you ended up with every member of the extended family being asked to try and book a slot, quickly overwhelming their booking systems. At least you didn't need to worry about it all day: there wasn't a chance in hell to get something 3 minutes after the booking system opened each day. Friends described how stressful it was for them, their parents being completely helpless and essentially fearing that their health depended on getting one of those elusive appointments, and being devastated each day they didn't succeed.