I have to agree with the group. There is a lot of 'stuff' to do just loading and unloading.
That said, put some bed linens in a bag, snacks in another bag and head out. It is not like you are setting it up to keep ready for an emergency or a few weeks on the road.
Just make sure the dealer/individual you rent from shows you how everything hooks up, including the tongue to the truck. How to turn the water heater on as well as the furnace or A/C.
Not a big deal, but you likely have a good idea how things work if you read this and other RV forums. Out break-in trip with the current coach was at a state park about 12 miles from our home. We learned a few things becoming familiar with this coach. You didn't become a dancer the first time you tried to walk, you had to learn how. This overnight is just a few steps before you run and dance. ;) ;)
I certainly hope you both enjoy it.