Fly all night to Bangkok from D.C. Make that: fly two "all nights." West to East to get to Southeast Asia is tougher than East to West—some disagree. First redeye is D.C. to Frankfurt, then Frankfurt to Bangkok on Royal Thai—offering Royal Service. Arrive early and hit the streets ASAP. Above: Street food. No I shouldn't. Yes I did. Can't stick with hotel food—why else bring a trunkful of Immodium!