I'll have about 36 hours. Here's the planned itinerary. Anything great activities I should consider?

Day 0: arrive in Anchorage late at night and drive to Girdwood.

Day 1:
Spend 2 hours at the Alaska Wildlife Conservation Center (our family loves this kind of thing)
Drive directly to Seward (2 hours) or detour in Portage. In Portage we'd take boat to the glacier or do a hike to it? Or is there something better in Seward I can do in half a day?
Eventually drive to Seward. Maybe hit the aquatic center. Seems about all the time we'd have.

Day 2:
Wake up in Seward
Then either (in order of preference due to cost):
1. Do as much of the Harding Ice Field Hike as we can
2. Do a fjord tour on Resurrection Bay (awesome but pricey and there are 5 of us)
3. Do a fishing trip (even more pricey and expensive to ship fish home)
Leave by 5 to get to Whittier by about 7.