Just this past weekend, we were able to get our family from across the Globe on group FT without any issues. We had 6 different families join from different places. The quality and experience was awesome!
So apparently after you select the individuals to FaceTime, you have to go back into the list and ring them each individually or they’ll be stuck on “waiting” in the main screen. Something I didn’t know and glad I figured it out by playing around with it. Works good now.