I don't think they usually open the fuel pumps for private rentals but I'm not 100% sure. To be on the safe side, I'd bring fuel with you. Also, you can call Atco and ask if they'd be willing to open the pumps for a private rental. If there's enough demand, they might. Anyway, after the rental they have the street night so they'd have to open the pumps anyway. It's worth a call.