The voucher sent was quickly sent and accepted. The tour was eventful and for the next time (or if you want to explore Singapore for the first time) a 48-hour ticket is better because you can then stay longer at different stops of the Hop on Hop off tour and not always look for the next bus must because the day is quickly coming to an end before impressions of the city. The drivers were friendly and the tour was very enjoyable and relaxing with explanations of each stop via audio headphones.