Booked a midsize with National for $159.89 week + $22.84 per day for 4 extra days...total $339.17USD final cost is estimated to be $354.16CAD total. Is this a good rate...booked this back in March. I know National will put a hold for the full amount of the rental on my cc but how much do they hold for a deposit as well...what is the total amount that will be held on my cc. We are Emerald Aisle members, so I just go directly to the garage...correct and get the car, show my DL and Emerald Club card and all should be fine? Is there an additional driver charge to add my bf to the car as well? If so, is there an additional hold put on his cc? First time using Emerald Aisle so I'm a little anxious over the whole process...thanks!