For those booking with Orcar for the first time.
When you get to Tenerife arrivals do not look for a ORCAR car hire desk kiosk etc (as I did) as you won't find one but go straight to the AutoReisen desk - to the right prior to exiting arrivals, they are one of the same.
We pre-booked on the internet a H1 9 seater with baby seat and child seat, you pick up these from a kiosk in the carpark rather them being already in the car.
We were impressed by the companies level of service and had no problems at all with the car. It was great for moving 6 adults, 2 kids and all the luggage !
Regarding petrol it was on a full - full basis. Would definately use them again.
Chris