In looking at the possible Kenai Fjords tours, I see 2 - the one run by the park service and the one run by Major Marine. Toursaver has a coupon for the Major Marine one which makes it the cheapest, but the AAA tour guide lists the one by the park service as a gem. Any input regarding which would be the better tour? If the Park service one is best, we would be willing to pay the extra, but... Opinions, please. Thanks!