Originally Posted by
whimike
Even though my experience was poor, I didn't run into your issues.
1) My booking email, or an automated email several days before the rental, states you either wait for the Sixt bus or call them to request the bus, with phone# listed in the email.
2) At the domestic terminal the Sixt bus comes every 30 minuets or so. You only need to call if you are waiting at the International Terminal, where they will come get you.
3) My tank wasn't full either when I rented but they only requested i return it at the level I got it at. Certainly no requirement to fill it.
Actually, no bus as a driver brought my car to the curb by the domestic terminal. I called of course, and he was there in less than 10 minutes.