When is Too Early?

There is a parking lot cleaning service that does the big lot beside the hotel... in the mornings they are out there with their rig and back-pack blowers at 5:00am... really pisses my guests off every now and again but anyway this made me think about that... so IMHO your all good if your starting at 6:00am... atleast they know when they are awoken by your snow blower they should probably get up early and unearth their driveways as well...