Update from my last post, yesterday I did get the "not in park". I only needed to go back and hit join again and the system picked everyone up. It's almost as if there was a slight delay between the join button and the detection of everyone. I was worried we'd miss out, but it was fine. We had BG 21. It took awhile for groups to start being called. We completed ToT and RnR just right around 10. Proceeded on to Slinky, an 80min wait that really took just under 60. Grabbed a quick lunch. Headed to MMRR and it went down on our way. Since we didn't care about anything else and were really only waiting and hoping for our BG before leaving for the airport, we got in line anyway. I don't even know how long that took, but we made it inside to the ramp when it went down again. At this point up to BG 20 was being called and we were racing time so we bailed and headed to GE. I was asking a CM about how long it might take to get through since we had a plane to catch when our group was called. She said we could just exit out if needed.
We made it, barely. Left DHS about 30 min after I had wanted, but we got RotR in. This was only my second ride (first in Jan) and I know of one thing that was not working and I felt a little more was missing as well. It was still enjoyable.
I hope they fix the BG process soon, but honestly, if you have to manually select everyone then go back and hit join again. Don't waste time selecting everyone (I did) and proceeding, just go back and start again seemed to work well.