Online when reserving a vehicle it says "unlimited mileage" but on the policy it says you will be charged for the miles you use. Which one is it? Also, I want to drive out of Seattle to nearby towns. Is that possible?

I also saw a similar thing but received unlimited mileage when it came to the actual rental. That being said just as a heads up, I was there about a month ago and upon arrival discovered they don't allow after hour drop off so be sure to plan around that.

I am pretty sure all rentals at Hertz are unlimited mileage, since it seems to be one of their perks. I haven't had any mileage issue during any rentals.