Many RV makers do a slap-dab job of assembly with minimally trained assemblers and little actual testing and QC. The dealer is expected to take up the slack but must get factory authorization to spend what little money is set aside for fixing factory mistakes/defects. As others have said, have a practice camping exercise in your driveway before "hitting the open roads", try everything and allow plenty of time for busy dealer service to fix stuff, expect to have to take rig back to dealer to get fixes actually done and done satisfactorily.