We carry two 30Amp extension cords. Don't use them often, but when you need them...
In fact, we used both of them two weeks ago at a family reunion. Only 30A plug was 65' away. Use quick connects on the water hoses. Much easier.
From the CG water hookup. Short hose, pressure regulator, water filter, hose as necessary, faucet attached to the city water hookup on the trailer. (CW, Walmart) Instead of buying a 4' and a 10 ' hose, buy a 25' hose and cut it at 10' and use repair connectors. Much cheaper.
+1 on buying the best sewer hose you can afford. You need at least two, with a connector. Some of the good hoses will let you get 2 15' hoses in the bumper.
2010 Zinger ZT19RD
2000 Dodge Ram 2500 Cummins 4X4