With the recent hold times, a friend wondered how they might be able to still use RGG fares. They received this curious response:
Given the wait times, we’ve actually relaxed the timelines for booking these, so you can call through more than 90 minutes prior to the flight.
The only thing I'd add is that at this time of the year, our flights are very full, so there are fewer times where seats are left available on the day of the flight, but that will get better as we pass the peak.