We are 62yrs old,love adventure, hiking, unique eats, wineries. Plan to travel in a 5th wheel from michigan to Glacier NP,Olympic,crater lake,Yellowstone,grand Tetons,and badlands National Parks before returning home. Hope to take 2 or more months to trVel,and would appreciate any thoughts on reservations, where to go and special place within these national parks. Do we need to try to reserve in the parks? We stayed in 5 different NP 2 yrs ago and love the park systems and people we met.