No there’s no dry camping in the official sites. However, if the park is full, they may let you stay in overflow on a night by night basis. It’s not a great situation however, because they are inconsistent in how they administer overflow. They also make you park 3 feet way from the next rig, and if their generator is running, there’s no escaping the noise or fumes. Plus it’s $20, with no restroom nearby.