Back to provide some more details on our trip which was from June 3 to 10. We took this trip with my parents to celebrate their 50th wedding anniversary. They are both 70 and had never been to Alaska. Also traveling were my husband and two teens son (16) and daughter (14). My family of four has been on two European based and one US based
ABD in the past - we are Disney freaks and do all the Disney things

My parents are big fans of the Disney parks but were not into the idea of a cruise especially one that is too much Disney.
This trip was fabulous and I am missing Alaska so much. We had a really good mix of people that all got along well, but because we had a larger family group ourselves we did not form the close friendships with other people that we usually do. There were four families including ours that were multi-generational.
As far as the pace of the activities there were always options or the option to sit out. We actually had a concern re some of the activities as my daughter tore her ACL before the trip and her doctor wanted to wait until after the trip to do surgery. We notified ABD in advance to make sure there would be options in case she wanted to sit anything out (we were mostly concerned with the bike ride). When we checked in with them they made sure to explain what the options were for each day there were strenuous activities. In the end she decided to do all the different activities as none of them were too much for her. On the Denali Park Day the options were a white water raft, a raft float or a bus tour of Denali National Park. My parents and I chose the tour of Denali and the rest of the family the whitewater rafting. We were all very happy with our choices.
As others have mentioned, Alaska is a huge state so there is some bus time to get from place to place, but part of the beauty of the way ABD plans these trips is that it was all phased so well. At the end of the day of biking and kayaking we had our longest bus ride (maybe 2.25 to 2 hours) from the lake to Talkeetna. It was long enough to play a movie and everyone was so tired from the busy day that no one seemed to mind - the guides also brought the snack basket around a couple of times. The next day was a long train ride (probably about 4.5 hours) it was great to have a "sitting" day after the active day and the train was so amazing that I think many of us would have stayed on longer. The other big bus day was Friday for us (after the active Denali day). We spent a good part of the day on the bus leaving Denali fairly early but never had more than 2 hours without a stop. We went: hotel to Denali park entrance to rest stop (longest stretch and a movie played) to pizza lunch and then sled dog (both in same town) to our next hotel in Girdwood (broken up with a snack stop).
The scenery was amazing and we loved all the different activities. We had a hard time picking our favorite part of the trip. This trip did have a lot of moving around with four different hotels in a 7 night trip, but we saw a lot of Alaska. I would be happy to answer any other questions about this trip - I think it would be perfect based on what your interests and travel group is. I guess the only thing that I would say is that I would not recommend this trip to someone that has a huge aversion to porta-potties

You are in national parks or other rustic locations for most of the trip activities.