I don't know if that is something new or not, but we went to Alaska several years ago now and we were very early in the season, around June 1, and we went to Glacier Bay. One thing we did miss because of going early is that we were not able to do the dogsled expedition we booked, because there was too much snow still in the area where they drop you off for the tour. Way early in the season or way late is often MUCH cheaper than the cruises smack in the middle of the season. When we went, we had zero mosquitoes. The weather was actually quite nice when we went and fairly warm, but that is all very much a crap shoot. We got to see a tremendous amount of eagles closer than normal. The tour guides said that later on, after the salmon are running, the eagles are full with salmon and thus don't feed from the tour guides as much. We didn't see the salmon run and didn't see the bears fishing, which happens later than when we went. If and when we go again, I definitely want to go later, to be able to see the salmon and the bears fishing.