OK we have a 24 foot Hymer and tow a trailer, in France apart from one occasion we have never been turned away due to size. However some sites can be a driving test to negioate around and on occasions pitches can be a squeeze. But we never travel in the high season and I never plan just turn up and hope for the best. We are thinking of changing to a 31 foot RV and will be still towing a trailer with car, now what do you guys do ? do you plan ahead and check access and pitch size etc, or just turn up ? Also does emptying the loo tank, (getting close enough to the waste dump) present many problems ?