Three of us will be coming to Glacier in two weeks. While we plan to do some hiking, we will not be doing anything too advanced or any backcountry hiking. We are all amateurs, so we will stick to the main trails and probably won't go too far. Is it really necessary for us to buy bear spray, or should it be fairly safe? I realize that bears can be anywhere in the park, even in populated areas, but I didn't know if bear spray was recommended for everyone, or mainly just those doing longer, more remote hiking.