We spent one night in the RV lot. It cost $15.00 but included use of the laundry, bathrooms and showers which were very clean and warm on a cool morning. We were also allowed to use a dump station at any vacant lot. The RV lot is hard gravel and level. The RV resort is located on Coos Bay. Very pretty sunrise. I recommend staying here.
NO FREE OVERNIGHT PARKING ALLOWED ANYMORE. Dry Camp/Parking Lot Camping in an RV is now $15 per night. You must register at the RV park and display your receipt in your window. This does give you access to the RV Park Showers/Laundry/Water Fill/DumpStation/Free Wi-Fi. Shuttle service comes around routinely.
We parked on the gravel closest to the casino and was too far away from the wi-fi, so you must have to park closer to the RV park. I would still continue using this lot despite the $15 fee. No broken down 'living there' RVs anymore. Very Large Level gravel lot.
(Editor's comment: Well that's a shame, $15 isn't bad for non-gamblers, but I expect a lot of people leave more than that behind in the casino. Thanks for the report!)