Please help this clueless person from New York. We are taking a cruise/land vacation in Alaska in late August/early September. The usual thing -- a few days in Vancouver, then a cruise to see glaciers (we hope) and some land time in Denali, ending in Fairbanks. What the heck is the weather at that time? And what do we need to bring? Do I need a waterproof jacket? Is it cold enough for a hip-length Land's End puffer with a hood I already have? How about shoes? Sandals? Boots? Trainers? Short sleeves or long? Have rarely been this confsed. I just have no idea! Please help! Thanks in advance.