Spot on about going there early so you may be able to catch 2 caves as a better package deal - but they are set at scheduled times throughout the day, so expect to spend some time lazying about and potentially spending $ to boost the local tourism $. On a regular basis, there are musical performances in the caves as well making use of the acoustics in the cave. I\'m yet to go for one, at least it\'s not too far off from Sydney.