First time I used it, we went to Castello di Amorosa in Calistoga, California. It's a new winery-castle in the Napa Valley by the acclaimed V. Sattui family. They have really good wines too, made in the true French tradition.
I've only used it a couple times, it's winter and it's been raining pretty much too. No way will I get it wet!
I just oh, love it!