I highly recommend you to go Hop on hop off because of the savings, convenience, you just need to buy a ticket, get on and off the places you like, every time you go to places with Hop on hop off, you also choose this vehicle. However, in Singapore, if you buy tickets, note that in addition to Hop on Hop off, there is also a Duck tour. With Duck tour, they ask that when you book tickets online, you have to call the staff to confirm there are more seats. if k, buying tickets without confirmation is also considered valid. The day I arrived, I knew it