Often, visitors to Havana, Cuba, can feel as though they are unstuck in time, what with the pervasive classic muscle cars and faded mid-century modern tourist attractions. Some tourists revel in this dissonance and take to the Mad Men lifestyle, while others may consider the many injuries, both self-inflicted and those caused by others, that have led Cuba to be forever stuck in the late 1950s. Perhaps nowhere is that tourist dissonance felt more strongly than at El Polinesio, a fully preserved tiki bar located in the Habana Libre hotel. Before…