I have had some type of RV for over 40 years, and have looked over many warranties and talked to many people who have purchased them only to find out that they are virtually useless whenever they have tried to use them.
Most RVs are pretty simple to understand and there are scores of web sites where you can get bundles of information on how to fix anything that may happen.
As far as the RPOD, this thing is so easy to understand. Other than a few issues of workmanship on the inside,, there is nothing complicated about this product. As far as protecting the outside of the pod, a coat of good wax a couple of times a year will give you all the protection you need. (As long as you don't store it beneath a tree)
As with any RV, maintain all your sealants on the outside, keep it clean, good tires properly inflated, keep the wheel bearings in good shape and keep a can of black spray paint handy to take care of the light surface rust on the frame...........You are good to go!
You are going to love seeing this country!!