They are not all going to be walking distance, but Guernsey is pretty small so taxi or buses will get you there. Some places are via boat (such as Herm or Sark), which are boat trips from St Peter Port (where you will dock). So for those you'll need an excursion or to book a boat trip. Hope that helps :)
6:25 I laid that granite outdoor area!❤ and enjoy it whiles you can, a quarry is being opened up about 300 yards behind it, going to totally ruin the area. Wankers.
