I had planned on taking the hop on/off bus early....as it happened, I couldn't catch it until after 11am. The system has it that it's only that day (NOT, as with others) 24 hr. basis. So I felt shortchanged. You should change this to it being good for the 24 hrs.
Loop that the buses did was a "horizontal 8". Wish we could have gotten off the bus (to catch our cruise) at the closest point to the ship without having to redo the 2nd loop so we had to then allow this time to be back in time, instead of further visiting the more important area of Cathedral
This was a perfect Hop on/off. VERY worth while, and I highly recommend including the boat ride through the river (if it's running). Driver was more than nice to allow us 2 more hours of our 48 ticket, because of heavy traffic...allowed us to complete tour plans! Advise plan ahead and look at bus sch