how is a package tour to Europe looks like?

Looking into take a 10~11 day package tour to Eurpo from one of the tour
operator (Trafalgar, Cosmos or Globus) and wonder how their itinerates
look like. From their brochures, it seems they all have a morning
sightseeing tour in the morning when we first arrive in a city. Does
this mean we are on our own in the afternoon and evening? Or we will
need to sign up with their optional tour for the afternoon/evening
because the hotel may not be centrally located? What price range is
their optional tours?
Thanks