Where are you going for your maiden trip? Preferably, near home (within 30 minutes)? Or at least near a Walmart? Or... a large "resort" style campground with a good "camp store"? An earlier post mentioned bringing a Visa card with you - that comes from experience!
If you still have a couple weeks, can you spend a weekend at "Camp Driveway"? Basically "camp out" at your house?
We've been to a few campgrounds where you can tell the camp store was setup by fellow RV'ers... odd little things you wouldn't find normally, but campers need.
Wherever you go, don't worry. You'll be fine. You will have fun!
And.... a few years from now, you'll be cleaning out all the excess stuff you bought!
