There are actually at least 4 separate camping areas here at the confluence of the Matanuska and King rivers. The largest is on the more southwesterly corner and could accommodate at least a dozen rigs of any size. Most are on river gravel or dirt, and a few are riverfront. Most of these would offer excellent Starlink and solar. On the northwesterly side are a half dozen sites mixed among the trees. A big rig could get in here, but this is more natural for vans and such. Heavy trees mean little solar and obstructed Starlink. The northeasterly side has a few spots too, but definitely just a van or smaller.
Road noise is shockingly light considering how close you are to the road. The river drowns out a lot of it, and being significantly below the road helps too.
Not exactly peaceful camping, so I expect most people are like us and will use it strictly as an overnight.