Is your Tow vehicle equipped with a brake control unit for your trailer? Also, I prefer to scotch my wheels front and back so I suggest an extra set of wheel chocks. You will need a white fresh water hose. Most all parks require a "donut" for your sewer connection. This is a adapter that prevents overflow and escaping sewer gases, in theory. I like using the plastic or rubber coated ties to secure cables, chains etc on the trailer. Be sure to have an assortment of fuses on hand. Walmart across the street from Oliver carries them, the ties, water hose, etc. Your wife will encourage you to get the black tank treatment packs to make the bathroom smell fresh. Again, sold at Walmart.
Be prepared to have many stop you along the way to see your trailer so have Anita to give you some brochures. Happy camping and be safe
Coy