Originally Posted by pdb

Car rental is a must, IMHO. Check out the tide charts for the Cook Inlet and you may be lucky enough to witness a bore tide...pretty impressive whether you're 10 or 100. That could be done in conjunction with a drive down to Seward for a day trip to see Exit Glacier and perhaps the marvelous aquarium. (I don't know if the Portage Glacier Visitors' Center is open, but if so, that can also be combined on that day trip. (Granted, the distance from Anchorage to Seward is about 120 miles, but there's lots of spectacular scenery along the way.)

It looks like you'll have clear weather on the weekend, so check out http://www.gedds.alaska.edu/AuroraForecast/ to see where you might go at night to catch the Aurora Borealis. (Looks like Friday night there will be high activity.) Have a great trip.