Trevor's Guide service does not offer any lodging, but here are some lodging options that are available in the area. I am not affiliated with any of these places, I am just providing their numbers for your convenience.
Glasgow is approximately 15 Miles from Fort Peck and has several Hotel/Motels to choose from. Previous clients have enjoyed their stays at the:
Cottonwood Inn & Suites (406) 228-8213
Star Lodge Motel(406) 228-2494
In Fort Peck there is:
The Fort Peck Hotel(406)526-3266
Lakeridge Motel and Tackle(406) 526-3597
If you are wanting to Stay/Camp at Rock Creek, The Rock Creek Marina does have cabins as well as camp sites. (406)485-2560
There is ample camping in the area as well. The U.S. Army Corps of Engineers has an excellent Campground in Fort Peck with full hookup sites. (Downstream Camp ground).
A Great Source for information is the Fort Peck Marina (406)526-3442 and they have camping available.
There is also Free Primitive camping available at Duck Creek and Flat lake area's that belong to the Corps.
Camping is always tight during the weekend of the 4th of July. Plan ahead.
If you have any questions about the area, feel free to give me a call.