If you want to get in the park but can't make it next week, park entrance fees are $15 per vehicle through 4/30/13 and bump up to $25 per vehicle starting 5/1/13. There are many other pass products available that can be viewed at: http://www.nps.gov/glac/planyourvisit/entrance-fees.htm
Going-to-the-Sun Road Status
Current Road Conditions (as of 4/19/13): Currently 17.0 miles of the Going-to-the-Sun Road are open for travel. Visitors can drive 11.5 miles from the West Entrance to Lake McDonald Lodge, and 5.5 miles from the St. Mary Entrance to Rising Sun.
Hiker and Biker Information: Road crews have started to plow the Going to the Sun Road. Foot traffic is currently allowed 9.5 miles past Lake McDonald Lodge to Logan Pit during the week while the road crew is working (Mon- Thur,7am- 4:30pm). During the weekend, there are no hiker/biker restrictions at this time.
On the East Side, there are no hiker/biker restrictions past the vehicle closure.
Check out where the plows are currently at by visiting: http://home.nps.gov/applications/glac/gttsroadplow/gttsroadplowstatus.cfm