Saturdays at my center are a shiiiiite show. But it's what I was hired FT for in January so I've always had a positive attitude about it, at least more so than most. Tues-Fri I can do a 170 stop 350 pkg 55 mile business route and be clocked out by 530 on a good day.
Saturday's it's been 100 stops 110 pkgs 150 miles back at 8, or I cover the "pickup route" which is more like 70-80 gravy resis with 3 hours of labor heavy pickups (docks are all blocked on the weekends so it's 90% hand-carting) and get back at 7. The big drawbacks are trying to get out of the building on time, getting 30 nda deliveries with commits laxed by an hour and a half, and having to navigate them perfectly without breaking route (which basically means completely ignore Orion, scroll and use area knowledge and shelf sequence as your EDD). And the ods pickups that can come from all over the county and thus are tough to divy up evenly. We usually have 7 routes out on Saturdays compared to 65ish Mon-Fri.
When we still had RDO, I learned 3 routes and basically had them all down after 2-3 days. Gaining area knowledge has been a slow burn on Saturday ODO but slowly and surely I'm gaining a nice base ability to figure out where I'm going without any technology. Saturdays are good for us new drivers because it forces you to gain area knowledge or pay the consequences of losing time letting that orion junk take you back and forth between 4 towns.