Our voucher didn't download with a QR code, so I emailed the provider, who said that the booking reference would suffice. However, the bus drivers at the port were very confused as to which tour we'd booked and had to phone their office. We were directed to one bus, then taken off that one and shown onto another, which finally took us on the tour.

A really good way to explore the city , especially for short visits . The 48 hour ticket is great value . There are two routes , a town and a beach route . The beach route runs less frequently so I’d suggest making sure you note the timetable otherwise you can be hanging around a while . I bought my ticket online which was really easy but you do need to get it validated at the start from the designated stop - staff were really helpful. The town route stops at Knossos.

Good access to the city and Knossos. One problem: your bus is impossible to tell apart from the others as you all use red and very small letters. If you used a different highlight colour (like blue wheels maybe? Or a green stripe?) It would be easier for your customers to see and find you.