June 13 through September 28 timed entry vehicle reservations are required for the west side of Going-to-the-Sun Road and North Fork from 7 am to 3 pmSo there are no longer Timed Entry Vehicle Reservation Passes required during peak season ?
Also stay in the park or enter from the East. No lines.
As for too many people in September? GTTS Road doesn't open until Mid June and closes around Mid-October. So the only "good" week is first week of October lol.
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