If you are looking for Interstate travel then I-10 is your only choice thru FL. There are two secondary highways, US 90 which basically follows I-10 and US 19/98 which follows the coast. That's OK until you get to the section east of Mexico Beach when the traffic spikes making for very slow going. No COE in Florida except for the one east of Ft Myers, But East Bank COE is just over the state line. Not our favorite COE but OK.
At Mobile you can cut north to I-40. Alabama/Mississippi have a number of COE parks. Get a
COE Book for lists of COE locations.
In Texas you won't hit a COE park until you get around San Antonio. After that there aren't any near your direct path. No water no COE basically. Most have w/e until you get way north when they only have electric. We have probably stayed at 30-40 COE camps.
In New Mexico and Arizona there is plenty of Boondocking. Texas has many city campgrounds, usually a very good deal. Suggest you go online and search YouTube for "State Name, camping" There are too many to list here. Get RVTW for planning and thousands of parks, Join the
Escapees for their parks and lots of info on camping.
