We happened to make it out last weekend for a spur of the moment opener to our camping season. I didn't have time nor desire to properly dewinterize it so we did without the water system. I'm actually glad as it helped to push out outside more often anyway. I called up some friends on Friday morning and invited them to come along. They made it to the campsite on Saturday but we had a great time.
Nothing like spontaneous surprise camping to get the season off to a good start.
Now I just have to go back and take care of all those maintenance items and projects on the camper I've neglected all winter long.