New motorhomer, long-time cyclist...planning a trip to Germany in late August, early September. Intention is to park up in site near Koblenz, take tandem on train to Trier, then pedal slowly down the Moselle back to Koblenz, perhaps three/four nights. either camping or in b&B. Just slightly nervous about leaving the motorhome on its own! I'll tell the site owner what we're doing, but wondered if anyone had done anything similar and had experiences to share?