Update
If you happen to find yourself in Quito, Ecuador for some reason, like heading on to the Galapagos Islands for excellent scuba diving, there're actually some nice 6D games available. The casino in the Hilton and the Monte Carlo several blocks down Avienda Amazonas both have 6D games with DAS, Split 4X, resplit Aces, Surrender, Ins and Pen generally of 4.5 decks with max/min ranging from $2-$50, $5-$250, $10-$500. Currency in Ecuador is US dollars. Players were pretty friendly and floor crew seemed relaxed.