Do yall buy the special RV TP? When we picked up or TT, they told me I must use only the RV TP, but I have also been told by other veteran RVers that it is not necessary.
I use whatever passes the following test. That's quite a few brands of TP.
Take a cup of water. Cold of course. Put several pieces of the TP in the water, shake it around a bit for a minute. If it dissolves, I use it in the RV (or park model). Doesn't matter how much it dissolves.
Anything that doesn't dissolve, even after hours, I'd be hesitant to use.