You can park at and Bass Pro & Cracker Barrel nation wide, but Silverton casino owns the land, and they do not want you to park there overnight.

Don’t Park Here

Silverton Hotel will not let you spend the night. We’re having rig issues, tired and looking for a place so we could rest, spend money at the casino, eat and then be gone in the morning. They said no sleeping in your RV. Bummed and now looking for a place to sleep.

No Overnight Parking

Wish to confirm Kathy's note.

No Overnight Parking Anywhere

Silverton Casino owned all of the parking, even by Bass Pro shops and Cracker Barrel. I called security and they said no parking unless you had a reservation at the hotel.