That's also a decision made by the FAA in your particular case. As you said, most people are supposed to use the portal, and if you're smart, you can get a waiver to fly anytime with no notice, although I hear filing a NOTAM is a wise endeavor.
Lol... see, I'm not driving or working now... I'm gonna slap the crap out of you with facts. Although you're probably too lazy to actually read, if you even can.