Get your bags, walk out of Bangkok Airport (DMK-Don Mueang Intl.), and pick up your rental car. Which one you motor off in depends on where you’re going. If you’ll be spending a lot of time driving in downtown Bangkok, around 12 miles from the terminal, choose something zippy. A compact car that’s easy to maneuver will be perfect for those busy city streets. But with a smorgasbord of things to see, like the stunning coral reefs of the surrounding region, you may want to add some pit stops. A larger vehicle, like a full-size car or an SUV, will make longer road trips a pleasure.