We were testing during our visit to BWI the end of Oct. thru early Nov.
There was definitely a lot of testing going on thru our entire trip.
We had many tech issues with our MB's (tickets weren't on our ressie so we couldn't book FP+)
There was a huge FP+ upgrade prior to our visit)
I wasn't able to book a lot prior to our visit, so I did it while we were there on the Disney app.
We park hop, so I found it frustrating that I had to pick 3 & sometimes one of our picks weren't available.
The tiered system started the last 2 days of our stay & the crowds during those last 2 days increased immensely!
Some of the FP+ picks I tried to make weren't available. Since I made changes to my FP+ I had to try & work with the tiered system which I didn't like. My older teens didn't want to ride The Little Mermaid ride for ex.
These MB's are sharing so much with WDW about our touring habits. It's way beyond our FP+ choices, food choices, snacks, purchases, our every move in WDW parks.
I hope that WDW will keep looking at the MB results & make tweaks to the system.
Obviously Epcot is one of the parks that is having difficulty with just 2 main attractions, trying to have enough FP's & FP+
We're sched to return next Oct & I'm curious to see all of the changes!