We upgraded to the Guided Ranger tour, which was very good. Along with the information she shared about the penguins, she supplied us with headphones to hear her, seat cushions for the concrete benches, binoculars, and a great location from which to view the penguins. It was well worth the extra cost. There are only very limited spaces available, so plan ahead. NO PHOTOGRAPHS are permitted, so don't bother to bring a camera (unless you want a picture of a taxidermied penguin after the tour.) It can get very cold as the sun goes down, so bring extra layers.