FWIW: lots of talk elsewhere about yesterday being SO bad, Epic’s Guest Services was issuing refunds and EPs en masse with apologies. Yes, it’s a technical rehearsal, but apparently yesterday was a level of bad that Universal considered unacceptable, even under the caveat of being a preview. Some TM chatter sheds light on an “everything, everywhere, all at once” situation in which individual ride problems + a massive power outage + technical issues + inebriated and hostile guests converged at once and for an extended period of time. They’re learning as they go, not just about fixes required for operations, but also how to handle a variety of guest situations, from how to feed a hungry crowd when mobile order is down, restaurants close early due to issues, and the reminding ones run out of food, to getting security/LE into an area ASAP to handle altercations. Oof. I feel for the poor TMs.
A takeaway that’s helpful to me and maybe for others: it sounds like Universal is very aware of what’s happening and Guest Services is offering some measure of remedy when things are particularly atrocious, but you have to be proactive and ask (politely!!!) for that.