Hi eb, the weather in Alaska is very unpredictable. It could be cloudy and cold or warm and sunny. The $1000 you save can buy a whole lot of raincoats
Seriously, there are some fantastic rates on all lines being offered. Costa sent me an email for $449/pp Christmas or New Years cruise. Too bad I already had the Royal booked, I could have saved tons! The average temperatures in Southern/Interior Alaska in May are upper 50s for highs, upper 30s for lows. Far north are 20s for highs, teens for lows. Plenty of sunshine hours, though.