For Denali Park you need a one way cruise and either an add on cruisetour or go on your own for the most freedom. Most HAL cruisetours included the Tundra Wilderness TOUR bus, avoid any with Natural History TOUR bus. Be aware- the farthest the TOUR buses go is mile 53 unless McKinley is viewable which is rare, they then can go up to about mile 60. The tour bus value is over $70, includes a box lunch. Going on your own there is the SHUTTLE bus option, 1/3 the cost, but you must bring all your own food and drink, but goes to mile 66 Eielson- my min. distance in, Wonder Lake mile 85, Kantishna mile 90. Be very very informed about WHAT you are purchasing in a cruise tour. Plenty of people are not. Strongly consider adding at least a day at the begining/end of the tour. You see little if anything of the starting/ending city. Go for as long as you can afford- ideally at least 7 days. Any shorter has too much time in transit compared to at the destination. You will see many - descriptions of preference for southbound cruises with the tours first, because they are always "on the go" and exhausting. My trips NEVER are and they don't have to be if you plan it right. Distances are vast- people underestimate them grossly. Another negative of cruisetours- they offer NO time in Seward with HAL- a great BIG missed opportunity for excellent touring. This is another reason why independent touring is so superior, not only can you see and do twice as much but also for 1/2 the costs. Meals are NOT included on the land portion of cruisetours. Budget 50% more than you would at home- for a cushion. Educate yourself fully on all the options and make an informed choice that is right for you.