In some ways I can almost understand doing this
Not complaining about it but I have wondered what is it like to someone who walks up to buy a 1-2 day ticket
This was DH, DD and I back in 2002. At Christmas time at that.
It worked out well for us, we went to Epcot as we had never been there before.
We walked up and got seated at Biergarten, saw Illuminations (or whatever it was called then) without planning, and got a good view.
But I do shudder to think what would happen to us if we were to do that today
It would not go as well, I'm guessing.
Actually, it can work out quite well, as DD22 and I did something similar in Nov. 2015. We had been at Disney Studios for the day, but of course all the ADRs were gone so we figured we'd eat counter service. However, we were hot, hungry, and exhausted by mid-afternoon, so decided that we needed a nice, sit-down TS dinner if we were going to make it long enough to see Osborne Lights. We tried for an ADR somewhere at the Studios, but it was a level 8 crowd, so of course nothing had "opened up." Around 4:30, she checked Biergarten and there was plenty of availability, so she made a reservation for 7:30. We saw Indiana Jones and then rode the Great Movie Ride (no FP+ for either) and then took the boat to Epcot. We had dinner, leaving the restaurant right at 9pm, when Illuminations was starting. We found a decent viewing spot, watched the show, hustled over to the boat, and caught the last 30 mins. of Osborne Lights. SO, being almost a walk-up at Biergarten and just watching Illuminations without stalking a viewing spot worked out quite nicely, for us!
I actually agree, in some respects, with the OP. They have multi-day tickets, they've used them in the past, they've been to WDW before and "know" how it works. Why would he think he'd
need to research the heck out of it? Also, although we met some very, very friendly cast members in November, we also met just as many who'd roll their eyes at any question asked. SO rude! When you are stationed next to the FP+ machine at the FP+ kiosk, isn't it your job to help people with FP+ selections, answer their questions, etc.? Apparently not... it interrupted them scrolling on their phones, or just talking with another CM (and we could hear the conversation, it wasn't about work, unless Disney now encourages its employees to get "soooo wasted!"). So, yeah, I kind-of understand the point the OP is making!