First trip with my new Rpod 178-a few questions

TP --Plastic Folgers or other brand small size coffee container with snap on lid is a recycle cost saver solution and can just sit on the shower floor until needed.  Zip lock bag is entry level. 
Brake issue--I just had my wheel bearings packed by a mechanic who is also a rv'er.    My brakes were set too tight and rubbing on the shoes it turned out.    The brakes adjust when backing and foot pedal brake is applied.  He suggested unplugging the camper plug in when backing up a lot, or turning the brake control to zero so you don't adjust your brakes by accident when backing.  Makes sense to me.