My wife camped once on the ground in 1980 and got a sinus headache, so me moved to a pop up trailer. All was good until we spent two weeks in Colorado and it rained 13 days, so we moved to a fullsize camper in 2000. Queen sized bed, radio, tv, microwave, coffee, a/c, heat, yada, yada. All's good.
To this day, she'll tell you in a minute that she doesn't pee in a hole in the ground, but KOA style works. (KOA also has Kampin Kabins which are little log cabins w/A/c if you want to throw in one every 3 days or so on laundry day. I just make sure we've got a decent bathhouse with flush toilets and she's good to go.
I personally like Woodall but for RV's. For cheap, look into state parks. Most states now have a web site where you can see if they have showers and so forth.
REI typically takes anything back for any reason from members. Marmot's a good tent, I've got one.