Fast booking process, no need to change ticket, just open QR code to scan. The inconvenience is that confirmation tickets are sent by pdf file with each QR code located at the top of the page. If you buy more than one ticket, each ticket is separated by 2 pdf pages for a long time to scan. For example, if the family travels about 6-7 people, it takes a long time to scan this code and it takes time to drag to another code. Small comment for klook check confirm form for more convenience.