Kathy, all you really need to start your camping is a hose that is for drinking water, a regulator to keep check on pressure as some CG's water comes out with lots of force. At least a 10 fto sewer hose for dumping holding tanks. electric is usually with the rig. a surge protector has made it to my list of must have's after all of these years too. Then you will need some form of levelers, you can buy at WM or CW or cut some wood pieces. That in my opinion is all you really need to start enjoying your camping times, and of course you probably know all of this and may have it.
Until this past year, when I was in a CG for months and months, did I feel full hooks up were necessary and only then did I think that a longer sewer hose was needed and also the rack to hold it up off the ground. I still do not have and have found no need for many items, others feel are necessary. But then your needs are in how you choose to travel and what you do while in your rig. Also how many people travel with you.
So whatever you do, don't get up tight over any item, there are always camping worlds and Wal marts everywhere to purchase something you might find you would like to have along the way.
All of this is only my opinion, but give yourself time to decide for yourself. Full hook ups have never been a priority with me, during the summer, I do enjoy elect when staying anywhere any length of time, but with the gen I can do without that too, for short spans of time. Wherever I stop and whatever hook ups are on my spot, I find I only hook the elect up, unless my water tank is getting low and then I fill it but do like to use my water pump too, to be sure it keeps working. How we all do things and what we need are all personal preferences, and you need time to find what yours are, so until then just start with the basics and enjoy.
Sue, I think you will find your way too this summer in what you do when parking or not do. I think you probably have all that you need to hook up however and whatever you want, so go with the flow and just enjoy your trip. Wow, setting here writing all of this, i'm ready to climb in mine and hit the road
Enjoy your travels everyone, however you choose to do it and with whatever rv you have, if a tent. Enjoy
Please stay safe,
CArol