I've seen photos of the site on NPS, Eeek's campsite photo site, and another site. I think there's probably enough room to place a tent, but Recreation.gov comes with a dire warning that " If you arrive to the campground with different equipment than what you booked for, you will likely not fit, and will be turned away."
I do remember a few years back, someone stated that unless the site description was specific that a tent won't fit, it should be no problem. I've got a small 3 person backpacking tent that can fit into tight squeezes.
I do see the following:
Quote
http://www.nps.gov/yose/planyourvisit/campingfaq.htm
I made a reservation for an RV nonelectric campsite but only have a tent. Can I still use the campsite?
Some campsites are listed on recreation.gov as "RV nonelectric." This means the campsite is best suited for RVs and trailers. While you aren't required to use an RV in one of these campsites, they are listed as RV only because they generally do not have adequate or level space to pitch a tent. If you arrive and find that the campsite doesn't work for you and/or your tent, we will not be able to move you to a different campsite. You should always read the site alerts and book a site that is appropriate for the equipment you will be camping in. If you have questions about a specific campsite, you can call the campground office at the phone number listed in your reservation.
I can deal with it not being level. We're going to be using an air mattress, so bumps aren't a big issue. I'd rather not be fighting with anyone over space. I know some groups bring lots of stuff in (like tables) and might be pinching off some space that might be usable for a tent. We're going to be in pretty tight. Just a small tent and using the picnic table, bear box. It looks like we'll have a double wide parking space. We can easily fit it in the parking space if it's dirt and we can pitch stakes.