It was quite crowded during the holiday, and the air circulation was poor; everyone felt it was hotter inside the cave than outside, so the experience was only so-so. Some of the staff weren't very friendly, especially the guides. They might have been helping out or were volunteers during the holiday, but we seemed to be holding them up, constantly urging us to move forward, even though everyone was actually following the flow and no one stopped. The rafting was the least interesting part; it was just one slope, and there was no prior notice that we would get wet, so we weren't prepared at all.