Contgrats on the new rig.
You will need everything you have at home, just less of it. Over time you develop techniques to speed in hitting the road and packing efficiently.
For basics a quality sewer hose, not the cheapo freebie you will likely get with our rig. I like the Rhino Hose. We carry an assortment of fresh water hoses, 2 -25' and 2-4' hoses. Don't pay big money on RV toilet paper, just use a good quality single ply from your local store.
I could of course go on and on but I expect the others here will chime in with lots of good stuff for ya.