Here is an excerpt from their website
ATTENTION: A portion of San Luis that had formerly been a state park changed to a state wildlife area on May 1, 2017.
What does this mean for camping?
CPW is no longer accepting reservations as the rules for camping have changed. Camping sites in the campground are now walk-in only (first come, first served). ?
Campers will need to plan to bring their own potable water, ice, and firewood.
CPW provides free electrical hook-ups at some sites and will continue to do so until costs become prohibitive. Please be judicious in your use of electricity so that we can continue to provide this service for no additional cost.
Please call the CPW Office at Monte Vista for more information at 719-587-6900. ?
A valid hunting or fishing license is required for everyone 18 or older accessing any State Wildlife Area or CPW-leased State Trust Land, effective July 1, 2020. For more information, read the frequently asked questions. An annual hunting or annual fishing license can be purchased through CPW authorized sales agents, by phone (1-800-244-5613), or online at CPWShop.
So to stay there you need a Colorado hunting or fishing license (both of which include a fee for state wildlife areas access, on my fishing license the habitat stamp cost $10 no opting out of it in addition to the fishing license, extra rod stamps etc. I thought previously that you could buy a wildlife area pass separately from the hunting and fishing license but I couldn't find one and if they did that previously it is no longer offered. The state wildlife areas in Colorado are not funded by taxpayers but solely from part of the proceeds from hunting and fishing licenses.
Bummer for an out of stater(nonhunter/fisher) for sure as the out of state licenses aren't exactly cheap however as a resident I have no issue with it since out of staters without a hunting or fishing license aren't putting anything into the kitty for the places. I realize that a camping charge of say $10 per night would overcome that easily. However the state wildlife areas here are setup in such a way as they are specifically set aside for hunters and fishers. While they allow hiking, birdwatching etc at times (based on the wildlife needs) their real purpose is specifically for hunting and fishing.
2016 Jayco 28.5 RLTS