My family has been going to Lundy Lake since 1961, we are on our fourth generation of family camping at Lundy. We go every year for two weeks usually in July. We believe Lundy is one of the best kept secrets in California. I have searched endless hours looking for information about Lundy on the internet and there is very little to see. With that being said let me try and answer your question.
Lundy has three camping area's
Mill Creek - This is a county park located in the canyon on the way up to the Lake. No hookups/pit toilets/there is water spigots for water. There are numerous sites that will accomodate your rig. I see large rigs in there every year. Resonable rates.
Lundy Resort has two separate camping area's.
They have a small trailer park with full hookups. Limited to 20 amp total. About 15 sites that can be reserved. These sites are located right next to each other, bareley room for awnings. Tough to manuever if somewhat full.
Lastly they have a campground for tents and smaller rigs. About 20 sites total. No hookups/limited water. Very rustic campsites. There maybe 2-3 sites that you could get your rig into. I pull a 23' and can only get into 5 total sites in the campground. No reservations.
The trailer park and the campground have access to showers/bathrooms to use. There is a small general store for basic goods. We love Lundy because it is small and very lightly used. We are often one of the only rigs in the campgrounds during the week. Due to the tough camping conditions I believe that most people are looking for a more comfortable experience. Rustic cabins and boat rentals are also available.
Sorry to be long winded, but this is my favorite place on earth.
PS. Lots of Bears. We saw 14 bears in two weeks. Never been a problem, but they are around.