Cycling into the park from the north entrance was killer and I was excited to rest. I was glad to find that the Mazama village was well stocked with beer and food. The campsite itself offers $5 hiker/biker sites (for people traveling without a motorized vehicle) that do not require a reservation…you just walk around in a wooded area and find a place to camp. This area had two shared fire rings which ended up being great as I got to meet a dozen or more PCT hikers (which I found educational and pleasant). Recognizing that this experience may not be for everyone, you can also camp back in the woods a ways for privacy and forego the fire. However, I found the experience very enjoyable and stayed an extra night.
When staying at this site, you do have to walk/ride a little ways to a toilet/shower/water as there is none in the hiker/biker area.
So basically, if you don't mind roughing it and like adventure, this was very enjoyable!