We have traveled to or from Alaska somewhere around 8-10 times (we lose count) and the only cruises we have not expierenced great glacier sights was in late summer. Every early cruise has been great with lots of snow and great glacier viewing, not to mention the winter fun along the way. We like the southbound trips out of Seward or Whittier. We always rent a car to get to the port and take some side trips along the way. Rentals are not pleantiful however each port has a major rent car company.Have a great trip!