We're seniors, like to hike (easy level 3- 5 mile round trip with some elevation change) and generally enjoy the national parks at our own pace. We're contemplating either doing Glacier, Banff, Lake Louise, Columbia Icefield, Jasper, and Calgary Stampede loop on a bus tour (it would be our first bus tour) or scheduling the trip on our own (which we've done in the past at other national parks). We can't decide if we want to give up our freedom and enjoy somebody else doing the driving/planning or do it ourselves. There would be no time for hiking on the bus tour. What amount of time should we allow for hiking in Glacier if we plan it ourselves? What amount of time at any of the other places on the itinerary, to explore on our own? Best time of year to go, if we drop the Stampede from the itinerary? Any suggestions would be greatly appreciated.