Yep, thankfully this turned out to be pretty minor. Despite my near heart attack when my reservation/BP disappeared from the app, the agents at the gate handled things very well. They called someone over from another gate to ask what to do, he told them to use Delta Term (is that the, uh, term? ) and they boarded us by typing in the seat numbers manually. Slowed things down a little bit and we took a minor departure delay as a result, but still arrived on time.

When this started, I was fretting that everything was going to come to a standstill, but the agents did a great job of powering through.