St. Croix doesn't have the nightlife of St. Thomas. To keep abreast of the newest nightspots, you might consult the publication St. Croix This Week, which is distributed free to cruise-ship and air passengers and is available at the tourist office.
Try to catch a performance of the Quadrille Dancers, a real cultural treat. Their dances have changed little since plantation days. The women wear long dresses, white gloves, and turbans, and the men wear flamboyant shirts, sashes, and tight black trousers. When you've learned their steps, you're invited to join the dancers on the floor. Ask at your hotel if and where they're performing.
Note: Women entering bars alone at night in Christiansted or Frederiksted should expect some advances from men. It is generally assumed here that a woman alone at a bar is seeking companionship and not necessarily just looking to have a drink and survey the scene. Nonetheless, women are fairly safe in bars providing they know how to deal with some leering. It is not wise to leave the bar alone and walk the lonely streets to your hotel. Take a taxi back -- it's worth the investment.