When we went to Glacier in 2011 and stayed at Many Glacier we took the Red Bus tour from the Many Glacier lodge over the Going to the Sun to Lake McDonald Lodge for lunch and then back to Many Glacier, an all day drive. The weather was perfect, the bus top was open so you got to see much more than you could driving yourself or taking the shuttle. The driver, Evelyn, had lots of Glacier stories and facts. Well worth the cost.
Even in August the wild flowers along the day hike trails are still blooming.
For videos of lots of day hikes in Glacier. The owner of this site hiked all 734 miles of Glacier Park trails in 2011.
If you don't take part in any of the day hikes you are not experiencing the best of the park.
We are considering going back next summer to celebrate the National Park Service's 100th anniversary.