Keep in mind if you're going to be shooting photographs, be prepared for taking quick photos in very low light conditions. If the tour group you're with is larger, you will need to photograph quickly. The tour guides try to accommodate everyone, but when the group is larger, those stuck near the end of the group may end up with accent lighting shut off in the middle of photos.
Try to be one of the first few in the group to give yourself more time and preparation for photographs. Tripods are not allowed although there are several safety railings throughout lit areas which can be used as a makeshift substitute. Also, keep an eye out for your electronic equipment and the aptly named, Cave of Kisses. Stalactites and stalagmites are still forming in the cave and the drips often hit unexpectedly in the dark.
