I was on standby for today's EWR/PIT flight UA 3425. 30 minutes before departure the gate agent said the flight was oversold oversold by 1 and they are offering a $500 certificate, the next flight left 3 hours later. No one took the offer. Five minutes later, the agent increased the offer to $1000 and two people rushed the gate. The person standing in the Group 1 or 2 line (didn't recall which line), had to move past a few people in front, which delayed his ability to get to the gate agent and thus, missed out on the certificate.
Fifteen minutes before departure, boarding had not commenced. The agent said there was maintenance issue, and that both lavatories (E170) were not working, and recommended that everyone use the restroom near the gate (113). Five minutes before departure, the pilot announced that United wanted them to fly the plane without any working lavatories. He said that it would be 2 hours without a lavatory (although the flight was only an hour, there was congestion and they may be on the ground an hour before taking off). A couple of passengers came up to change to the later flight.
The person who offered his seat (oversold) was called up the podium and told his seat was no longer needed. He was upset that he missed out on the $1,000 certificate. He also decided to take the later flight, thus the top 2 people on the Standby list cleared.