As to how many people use their showers in there Rv? We have a big shower and BR for a TT but only use the shower on occasion we usually use the comfort stations.
In the 26 years we had our other trailer neither DW or I ever used it and I think DW bathed one of our sons when he was little in it when we were dry camping for like 3 days. DW only uses our bath to do her hair and even then prefers the CG facilities. It's there for an emergency (DW used the one in our new trailer once at WDW the day after she dislocated her ankle), but we always use the CG facilities.
Larry