We are planning on going to Alaska on a caravan this summer too. The tour we were booked with just cancelled the tour today because they didn't have enough rigs signed up (had 6, needed 10 to make it worth their while). Our tour was with Alaska Trek Adventures. We're now thinking about going with Alaska Discovery tours operating out of Anchorage.
What company are you going with?
Oh by the way, we already got the Milepost book and a couple of DVDs (great information in the Milepost)
Thanks for the info,
Ken & Joyce Jensen