A trip to Alaska is only truly complete when you can leave the boat and visit the cities, towns and mainland sites that Alaska has to offer. Most cruise operators offer mainland packages that will allow you to get a taste of the Alaska mystic you hope to find. I would recommend trying to not only utilize the tours they provide, but also look for opportunities to get out on your own. Alaskan's have a reputation for being very friendly. Consider a day for fishing with a guide, a day to wander one of Alaska's smaller communities like Seward, Homer, Palmer or Valdez. Maybe a tour to one of Alaska's many Dog Mushing kennels. Alaskan's are a very diverse group with  some very different lifestyles, but you'll need to get away a little bit to find them. Look for tours that offer something completely unique to Alaska. Believe me, there are more and more every year. Get out and look around, you'll be happy you did.