While you could hang out at your hotel or spend the evening swinging on a hammock, the best nighttime activity here is to visit the ruins by moonlight. Those staying near the entrance can have their admission ticket validated to allow them to roam the park until 8pm, and in some cases even later, depending on the disposition of the guards. If the moon is waxing, full, or just beyond full, you're in for a real treat. Tip: Before venturing into the park at night, be sure to ask about the current level of safety.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.