Not too worried about the 12th man. Pat has already shown he's been willing to shell out the big bucks by sending his season ticket holders letters and magnets. I'm sure he'll spare no expense when the 12th man arrives at their seats to find an orange towel or an orange Pom Pom waiting for them. They will be plenty loud when the elite Joe Flacco takes the field.
They just need to remember to sit down and STFU when 18 is on the field.