Y'know. We own a mini storage. I have people asking me all the time if we have boat sized units... and a trailer corral... for this very reason.
We actually used to go camping by hauling two rigs: 5th wheel behind a 3/4 ton Ford, stock trailer behind a second gen Dodge Cummins. I like the 5th wheel because it had a toilet for middle of the night, my 46 year old bladder let me know too late I gotta go pee... and I don't have time to get to the on-site camp bathrooms... and the AC... not for daytime use but to get a good night sleep when it barely cools off at night.
It was way, way too much hassle. (Though. We may well have an other two rig trip this summer, maybe more: Son and Hubs prefer bass fishing. Son has an 87 long bed chevy as his first truck. It came with an 'old man camper shell'. He plans to put it BACK ON, throw his tackle and an air mattress in the bed, hook on to the bass boat and follow us to Sardis Lake, Lake Texoma, and Coffee Mill Lake this summer. I'll have the horse trailer and horses.)
I bought a 3 slant with a BIG dressing room and a queen sized bed, ac. It has electric and propane for heat options with added vents into the horse box for the horses if it gets too cold on them outside. It came with a portable 'camp' toilet that sits nicely in the corner where on some trailers there's an access door into the horse box. Mine doesn't have one, but it makes for a nice place to have a portable potty. It has a potable water tank and water pump that's been added, 110 plugs inside, outside hydrants and a hydrant in the front horse compartment (so you can convert the inside to a kitchen if need be).
My front compartment on the trailer, by the escape door, is dedicated to camping equipment - I have what my dad calls an Action Packer - a heavy duty plastic footlocker. In it is my perolator coffee pot, my coleman stove, my fuel bottles. I have a fish cleaning table - the kind that folds up, but has a sink on one end, a removable faucet. You hook a garden hose to it to have water. So far it's only been used to throw curry brushes on, but it's there if I need it. I have a small weber grill, my feed and hay and garden hose, my poop rake, and a broom, my tack repair tool box, all ride up in that front compartment.
I use a flatbed truck - I like it to use as my kitchen - that's where we cook our meals. You can get under the gooseneck and cook if it starts to rain. I've got a 'cowboy' shower, the type that you fill with water, let it warm in the sun, hang it up and rinse off. I have a pop up privacy cabana to hang it in.
We camp at equestrian camp grounds, which are usually apart from the boater/fisherman type campgrounds around lakes. They still have bathrooms available, and at some, showers.
I have a generator for camping at places with no electricity, the water tank on my trailer works for camping at places with no water - though I try to avoid those for the horses' sake not my own.
I see nothing wrong having a trailer with LQ. Some of us are too old for truly roughing it.
No matter what route you choose for the trailer though, camping with horses has been one of the best things to happen in my life. Period. I'd put it at number four: Met my husband and married him, had kids with him, got horses, go camping with horses... in that order of importance. It's changed my life and the lives our horses for the better and I am so glad my life took this turn. Even if it was unexpected, looking back, it's been organic growth. It's been good for all of us. I encourage anyone wanting to try it, to do it.
"We are here to laugh at the odds and live our lives so well that death will tremble to take us."