So, almost three and a half hours later, #patching was finished. Normally, it should take one to one and a half hours, but a lot of little things came up. Nothing I haven't dealt with before.
One system had its RPM broken by our automation (again). So, I had to rebuild it. While reviewing the updates on each system, I noticed a conf file on a system that created a new one. I ran a diff on it and the original but it didn't seem like it was anything serious, so I didn't merge it and figured I could table it until we're all back on Wednesday and I could talk to the #SME about it.
After the patching was done, several production sites wouldn't come up. I knew it was a race condition that happens sometimes that causes webserver service to go down. I just couldn't remember which server hosted the services. Luckily, a coworker was online and remembered which one it was. All the necessary services got restarted, and everything worked again.
So at least now I don't have to cover the two hours not covered by tomorrow and Tuesday's holiday hours (I work 9 hours most days), plus I get almost an hour and a half to leave early sometime this or next week!