I am having a sewer hookup installed,,, There are many options, the clean out plug is the easiest (unless, of course it's in the basement like mine is) I'm tapping the line to the "Street" (Alley) and doing it right but a contractor is doing it, kind of expensive as those pipes tend to be down a bit, Mine is at least 10 feet below grade, possibly 30-60
Yet another option is the SEWAGE PUMP or Macerator pump which you can buy at most RV supply places such as your (or my) dealer and/or Camping World.
This is a pump with fittings to fit the RV and a standard garden hose. The one I have is 12vdc powered
Took some looking to get a 50' BLACK garden hose (I got a good size one 3/4" I think) will work with up to a 1" hose and will pump waste over 100 feet if I get more hose.
100 feet should be enough to reach into the bathroom window and to the toilet bowel if you have to.
NOTES: Flush black water, then gray (Same as usuall) and optional rinse
Note 2: I got a black hose because of one simply reason.. I have exactly ONE black garden hose so if the hose is white, clear, green, gray, or any color OTHER THAN BLACK, it's fresh water only. Black is for USED