I looked at the Montana de Oro campground today (6/12/07) and met with the very nice camp host Lana.
Here, Reserve America only takes reservations Memorial Day through Labor Day weekend. After Labor Day it's first come, first served...without reservations. There are about 45 camp spots. Each spot has paved parking for two vehicles including a trailer, a table, and a fire ring. About 1/3 are well shaded. Another 1/3 have partial shade. It would seldom be hot here. There are pit toilets...I tried one out...it was well maintained. Showers are avail. 9 miles away at Morro Bay SP. Dogs on leash are welcome in the campground...but not on hiking trails.

There's a rear loop with about 15 spaces that we can get an informal hold on for a weekend sometime after Labor Day.

Four of the camping spaces are inside the loop with plenty of space around them for DO cooking and a potluck. One pit restroom is inside the loop and another one's nearby. There's a water tank for potable water. Pine trees are scattered throughout the campground, with a stream on one side, in a small wind protected valley, within walking distance of a sandy cove and the ocean.
Lana and her husband camp host here for 6 months then at MBSP for the other 6 mos. She loves the peace, wildlife, mild weather and meeting campers from around the world. Lana says there's lots of wildlife to enjoy. Crusty the sea gull expects a daily piece of bread. He was patiently waiting nearby for Wayne, Lana's husband, to wake up from a nap and toss a slice out. A photogenic female bobcat visits many mornings. Playful sea otters frolic in the cove. Rascally raccoons will steal your grub if you don't lock it up at night. Coyotes may provide some night sounds.
She hasn't cooked for the last 3 nights. Friendly campers shared their meals. Bet she'd enjoy a TD and DO potluck!
Now that I've walked through the campground and met the camp host I think Montana de Oro SP would be a very nice campsite for a small SLO, Calif. area gathering. It's beautiful, peaceful, a little secluded, yet only about 7 miles to Los Osos, 9 to Morro Bay SP, and about 20 miles from San Luis Obispo and Hwy. 101.