We did the Inside Passage on the Infinity this July and loved it so very much that we are going on the Summit Southbound next July. I have been reading the posts as to the pros and cons of planned tours but have decided to go with Celebrity rather than planning ourselves.I would really appreciate any imput from people who have done them in the past. We are leaning towards the 12 night tour which includes Anchorage, Talkeetna, Denali and Fairbanks. Thanks