Oh my goodness! I am sorry for that.
I had never emptied the holding tanks, either, til March of this year when I had no choice.
I asked someone to walk me thru it....me doing it, they instructing and watching, and have been doing it myself ever since. You could find someone at any campground to help you the first time, I am sure.
It is a matter of getting your connections tight, most importantly, and making sure everything is completely closed when you are done.
Good luck to you.
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚❤️