What you get told on the phone, as with any moving company or rental agency, may only be a rough estimate of the cost and delivery schedule. The actual details will vary upon pickup.
We were allowed to pick up the truck slightly early, however it was about $500 more than anticipated. The vehicle was dirty and had trash in all areas.
The back of the truck was also wet on the inside, so definitely cover your goods with something waterproof in case it rains.
I had to take it back early and really stress out because my return date was on a holiday.