I had read about it here quite a bit recently, but had no idea how effective it was until I tried it for myself. For a family of 5, it was very easy to get additional FP+ for virtually any attraction, often within minutes of trying. There were a few times where I had to initially book something for later in the day then refresh a few more times to move it up earlier. The only thing I completely struck out on was Navi, so we ended up waiting in standby for that one. I think this was the only standby line longer than 5-10 minutes that we encountered during our entire 7 day visit. Thanks to all who posted details for this strategy, especially @Klayfish It saved us a ton of time, we got to ride everything multiple times and never once had to arrive anywhere near rope drop.