We so far have not gotten a port a potty but we do carry toilet seat cover sheets. I might even make a raised toilet seat for those out houses. we carry hand cleaner toweletts. My cousin just brings a shovel.
But I have camped with sever hundred teardrops and many carry one several have a side tent for that others have a lowered floor. We do camp with a dressing room tent used for showers which could be used for one.