The most popular after-dark activities in Monteverde are night hikes in one of the reserves and a natural-history slide show. However, if you want a taste of the local party scene, head to La Taberna, which is just outside of downtown Santa Elena before the Serpentarium. This place attracts a mix of locals and tourists, cranks its music loud, and often gets people dancing. Alternatively, Flor de Vida, Kaffa El Café, and Moon Shiva sometimes feature live music, theater, or open-mic jam sessions. El Sapo Dorado has been hosting live dance bands from San José most Monday evenings.
You'll also want to check to see if there's any live music or other performance at the Monteverde Amphitheater (tel. 2645-6272), a beautiful open-air performance space, up a steep driveway up from Stella's Bakery, next to Bromelia's.