[Carl n Susan]

For once, a salesman is telling the truth. Montanas do not come with a sewer hose. Power cord, yes; sewer hose, no. In addition you will need a hose suitable for potable water. Most dealers will give you a "starter pack" which includes a water hose, sewer hose, and perhaps some other things. All of them are inexpensive and won't last for long. But they will get you started and serve the purpose until you have a better idea on what you really want to do.

Cheap sewer hoses quickly develop pinhole leaks. If you are going to use a traditional sewer hose (vs. the sewer solution or such) get one of the heavy duty ones such as Rhino.