I'm interested in crossing the border from Norway to Russia at Storskog, via car. We thought about driving to Murmansk or even not so far - Zapolyarny for instance. 

We will have a tent with us and ideally we'd like to camp. I'm pretty sure that there's no "freedom to roam" in Russia i.e. we can't just camp anywhere we'd like. 

I'd like to find a campsite where we pay some money and camp there and have access to some facilities.

However, I'm not sure if we'll be able to plan in advance where we're going to stay.

When you apply for a Russian visa it seems as though you have to list a hotel or a person you will be staying with. Is there any way to get a visa without having an exact prior plan for where you will be staying? And if so, is a campsite considered an acceptable place of residence to list?