Well I can attest that during the Christmas trip, we stayed at two RV parks that set the sewer hook up at the very back of the pad. I was able to link two hoses together one time, but didn't even try at the other and just pulled around to another site to dump on the way out, so a long hose that didn't take up a lot of room might be okay. But I'm with Gary; there has to be some potential for having some uninvited honey staying with you in that deal.
You would think there would be a rule of thumb or standard for the distance the sewer connection is located from the end of the pad or the electric connection. It is very inconsistent.