I think you wouldn't go wrong either way, except for one thing - which Princess ship are you going on? If the new Pacific Princess,you might get close enough to the active glacier in Tracy Arm to enjoy the calving. I was on a small ship there, and we were able to get in farther than the big ships could. I have also heard that Hubbard Glacier is quite active most of the time. You might be better on a big ship going to Hubbard Glacier. Either way, you're bound to enjoy Alaska!