Pertaining to your question about needing a special license, it will depend on the state of residence and the weight of the RV.
Looking at your profile, it reflects you are possibly a resident of West Virginia. According to the
Changing Gears website summary list, West Virginia does not require a special license for any recreational vehicle. Double check with your local DMV, however. If you are not in West Virginia, here is the Changing Gears website link:
RV Driver's License Requirements
The state we are licensed in, Nevada, requires a non-commercial Class B license for driving rigs over 26,000 lbs. GVWR (just about all diesel pushers). So that means to be properly licensed that we are required to pass both a written test and a road test which turns out to be, in our state, the same tests given to a Class B CDL applicant. An RVer just doesn't need the DOT physical card where a CDL licensed driver does.
As long as you are properly licensed in your state of residence/domicile, you are good to go in any state because of reciprocity agreements. So even though as Nevada residents, we have to have a Class B license, if you come to Nevada as a tourist with your RV, you are okay to drive it in Nevada with your West Virginia license.
It's actually ridiculous as we both could be driving the exact same RV in Nevada but we as residents have to have a Class B license and you as a visitor do NOT and we could be both driving the exact same vehicle.
That's why many think that licensing requirements should be the same in every state and there should be federal rules that apply to all drivers.