Oh wow, thank you so much for the information and the images. That's very helpful!
Looks like we won't be able to drive to Salmon glacier with our rental RV. As far as I know the rental insurance states we can't go offroad, which means no dirt roads :(
We've seen tons of bears in the US and Canada to date. Over 50, some were too close for comfort (on trails in Glacier NP). We were hoping to see them trying to catch salmon though. From what I've read we have a good chance of seeing that in mid-August. Our kids absolutely love wildlife watching. They don't mind spending hours trying to spot animals, be them whales, moose or mountain goats. Predators are a bonus, so bears are always high on their list. If we get to see a wolf, that would be absolutely awesome. I read a blog post the other day about someone who spotted a mountain lion crossing the road in that area, so that would really be amazing.
I think we'll plan on staying at camp run-a-muck for the night and be at the gates as they open. We'll probably head over there the previous evening too and try to get the pass ready for the following morning and maybe watch for animals at dusk.
We'll make sure to eat at the bus. It's funny because there's a similar establishment in Israel called the Blue Bus, where they serve excellent fresh hummus. The Blue Bus happens to be a five minute walk from our house :)
Thanks again for the replies - this is immensely helpful! Thank you!