We've been to Bonaire three times and wouldn't consider renting a truck from anyone other than Telerin. Easy to Google contact info. Poppy does a great job. They meet you at the airport, you sign, they hand you the keys and the parking stub (pre-paid) and you drive away. The way a car rental should be! Then you park at the airport on the day you leave, leaving the keys in the truck. That's it! Also, absolutely awesome service the two times we needed it over the course of the three trips (a soft tire on one trip and a blinky start up lock out on another - both fixed in an hour or two).
Also, Gary's advice is spot-on.
Hope that helps. Have a great trip!