Heading to a campground is probably a GOOD idea. It's a chance to try out all the systems, and if there are any problems, you can drop it back by the dealership on your way back by. There usually are a few minor things that come up on a shakedown trip. Some dealerships actually send their customers to a nearby campground when they pick up campers. I know mine does. Some dealerships have their own campgrounds. So your plan is solid.
By the way, I once had a Casita, which is similar to the Scamp you had. Nice but too small for even the two of us. Have fun.
2013 Surveyor SP220
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine