Turn off pump if requested. Replace deck fitting cap. It is no more difficult than pumping gasoline, but facilities and machinery do vary. In some marinas, dock staff will pump out the tank for you. Emptying the waste container isn't hard.
Some marinas have a separate dumping station just for portable toilets.
Others use their standard pumpout machinery with a different hose attachment for portables. If you cannot find an onshore dumping station, you can take the waste container home and dispose of the waste down your toilet. Just remember to dilute it, particularly if your home is connected to a septic system. You can also ask the marina if you can use their onshore restrooms, but do not do so without permission. For information about Pumpout stations not covered in this service please check our customer service mailroom .