Bingo. Deployment with us is automated. I don't actually stay up to 3 AM. However, during the deployment the machine is automatically updated with new packages

Bingo. Deployment with us is automated. I don't actually stay up to 3 AM. However, during the deployment the machine is automatically updated with new packages and the new version of the software, caches are cleared, it's restarted, etc. All of this probably takes 5 minutes at most, but still ... why do that in the middle of the day? Also, we do a daily backup around midnight. If the deployment is botched, I can come in early in the morning, notice it and simply do a roll-back using the backup. Very easy. Now, if you're actually staying up until 3 AM and doing things manually ... you need to automate things.