I just had success at 1:20pm with no issues. These instructions in the first post did NOT work for me:
Instead, I used my regular Microsoft Edge browser (not incognito). I just went to DisneyWorld.com, clicked login at the top right corner, logged in with
MDE credentials, and then went to the drop down to select park pass reservation. It was seamless for me - no orbit, no Millennium Falcon, no castles.
When I followed the workaround quoted above, I got the orbit/Millennium Falcon message on the dining reservations page. I was stuck there for about 20 minutes, finally made it in, followed the steps and got logged in, and THEN got the castle when I clicked on the link to make park passes, so there was no bypassing the castle for me with these steps. I finally closed out of the browser window with the castle, and just navigated to DisneyWorld.com and was able to log in like normal and book.
I also tried this at first on my Mac using Safari browser and the park pass page would not load at all - it was a mostly blank white screen, no castle or anything. Microsoft Edge on my windows PC is what worked.