We had a lovely visit earlier this week. Despite looking on trip adviser and the attraction home page, could not find if they took credit cards - they do. Visa and Amex
Anyway, getting in was quite efficient. We arrived shortly after a cruise tour and joined them on the tram. Caves were amazing, our 5 year old daughter loved them. Good to get off and walk around a bit on 2 stops.
Our guide knew what she was talking about but was a bit dull. Nonetheless the cave formation was definitely worth the visit.