Peggy you wont have a bit of trouble at all. They really help you into the Zodiacs and once on shore you can climb mountains or stay on the flat with me. Ken and Jerry can climb the hills we will sit and watch the penguins. Last time as Ken was sliding down the ice I was watching this little molting penguin. I was SO close. Well Ken came along and frightened the little guy and he did a direct forceful poop that hit me pretty well! At least it was "pink poop"