We got tired of walking around Vancouver, so we jumped on the Hop-On, Hop-Off bus tour. The passes are good for 24 hours, altho the buses do not run for 24 hours. I think they go from 8:30am to 5pm. This is the best way to see the highlights of the city. I recommend riding it all the way around to all the stops (24 of them) and then picking which places you want to hop-on/hop-off. Stanley Park is HUGE (100 acres) and its a lot easier seeing most of it from the bus than trying to walk it all. While riding, there's an audio tour that tells you about all the different areas and the buses are on WiFi, so if you have a smartphone and a way to get on the internet, you can see where the buses are located and plan accordingly to get picked up. They seemed to be extra full of passengers on the weekends.
Read javthrowr's full Star Princess cruise review