Camping is not just for the strong and able bodied, there are many campgrounds where people with physical handicaps can have an enjoyable camping experience.
Almost all campgrounds offer campsites that are handicap accessible.
Many of the state and national parks have camping sites, some of those would be marked as suitable for people with limited mobility.
Besides being accessible there are many trails that would be wheelchair friendly.
If you Google campgrounds in an area that you wish to camp you will find a list of campsites that are accessible to the handicapped.
Some campgrounds may not advertise as being accessible but by calling you can check them out if that is an area that you want to camp in.
Campsites need to be on level ground with hard pathways for easy navigation either for walking or with a wheelchair.
When checking on campsites be sure that facilities such as restroom and showers are close by and easy to get to.
Before going to a campground give them call and ask about campsites that would be available for someone with limited mobility and we all have to remember that many people have physical disabilities and they are not in a wheelchair,they still need to be able to get around easily.
Some campgrounds have planned activities and people to help or guide children and adults on sightseeing and hiking trips or just plain exploring nature most will have hard surface trails making it easier to get out see nature at its finest.
Fishing would be an activity that could be enjoyed either from a river bank or a dock on a lake, or fishing from a pontoon boat is great and you can't beat it for relaxation and for sightseeing.
Pontoon boats are very accessible and easy to move around on with a wheelchair or walker and not disturb anyone else on the boat.
You might have to change up on some camping equipment, tents are available that are more wheelchair friendly you would need to check with camping equipment stores or the online camping gear stores cots would be easier for someone with a handicap than air mattresses and maybe a stand alone table would be more convenient than a picnic table.
Otherwise your camp stove and other kitchen accessories would be all that is necessary.