u/Calm_Cell8429

Hi all,
My wife and I are hoping to do a midweek, 3-day, two-night backpacking trip at the beginning of August. We were hoping for advice on getting permits. Can we get walk-up permits the day of or the day before our trip? Also, what are the best itineraries, ideally in the Many Glacier section of the park? We are middle-level hikers looking for around 10 miles of hiking a day, and maybe an out-and-back trail, or possibly staying at the same campsite for both nights and doing day hikes without our packs from the campsite. Any ideas or advice?