Finally got through! It was incredible! I was in the line 2 hours and 25 minutes, after entering with group 25 at 8:20. They had just started to evacuate the line at 10:45, then reversed that decision and we started the experience about 5 minutes later.
Here's my whole timeline:
5:50 - arrived at park
6:36 - gates opened
6:46 - scanned in, joined BG25
8:20 - BG25 called / entered line
8:35ish - line stopped (Rey and Vi both visited while line stopped, plus snacks and water bottles passed out)
9:41 - line moved forward a couple rooms, then stopped again
10:45 - started to empty line, then sent us back in
10:50ish - started experience
11:11 - off ride (WOW! SO GOOD!)