Normal
It depends on which ship you are on as to using the pool. Not all pools are heated, and there is a reason Alaska is not known for its beaches. Unfortunately I am not familiar with the Norwegian Spirit. The weather in Alaska varies from warm during the day and cool at night to rainy and cool during the day and cold at night. So the layered approach is a good idea (as noted above). A wind breaker is also a good idea. Depending on the mosquitoes you might not want to wear shorts (pants or shirts). If the mosquitoes are around, you can not miss them, they are about half the size of an eagle.
