The post you are reporting:
That's not a proper tour bus, but one that only operates on cruise-ship days. It goes from the cruise terminal, to the Market Square, then up to the Castle, Market Square and round again.
What we need is a proper tour bus that goes to ALL the historic sites and attractions where a visit by the bus, can benefit the site it stops by, for example:
Market Square (for the Museum & Bronze-Age Boat and the Roman Painted House), White Cliffs Boat Tours, Seafront, Dover Castle, Langdon Cliffs, Ramada Hotel, Dover Transport Museum, Crabble Corn Mill, Market Square and round again.
On cruise-ship days, start off at the cruise terminals.
This may need 2 buses, but I haven't timed the journey, but ideally it should take around an hour, but in order for it to benefit all the above sites, stopping at their sites should be a priority. It should be for their benefit as well as the visitors, otherwise it's pointless.
I do fear though that a bad route will be chosen.
Roger