We booked thru Princess, a flight seeing glacier tour. It was absolutely beautiful. No landing on the glaciers though. It was in a small plane (carried 6 passengers)....had a small group. They have larger planes for up to 20 passengers. I highly recommend this excursion. We did this in the early morning.
In the afternoon, we did the Whale Watching Quest and Mendenhall Glacier. We were on a catamaran named Captain Nicholas. It was great! We saw lots of whales and sealions.