Get a tote similar to
this one. You will most likely need to dump the gray water a few times during a 5 - 7 day stay. You can tow this to the dump station with your TV - just put the handle over the ball.
Don't spare the water when flushing the toilet in an effort to keep the tank from filling. It is important that stuff floats, and does not settle on the bottom. I have used my tote to empty the black tank many times, really not any different that emptying the gray.
When leaving the camp ground, stop at the dump station and empty the black first, then the gray top flush out the hose.
Conserve tank capacity by taking Navy showers, and wipe food off plates with paper towels - don't put food particles in your gray tank. Better yet, use paper/plastic products.
You may have a sewer clean out at home. Look for a white pipe with a threaded cap sticking up near the house - behind a hedge for instance. If you have one of these, you can connect your hose to it.
You will do just fine - happy camping!