I found out that the title description [buy 1 free 1] is a bit confusing. During purchased, you actually need to select 2 adults. Based on my understanding, if buy 1 free one means if you buy for 1 adult, the subsequent adult fee will be waived.
Please help to look into the description. Others all good. Cheaper than buying at the counter.
If I decided to go temporarily, I checked the fare and ordered the ticket. I arrived at the destination in 20 minutes and can be used immediately. It is very convenient and the price is much cheaper than that of the day. On the holiday, it costs 45 people and Klook only has 38 people. And don't have to line up