I have been skiing, hiking and climbing in and around Engelberg for years now and go whenever I have time and am in the general neighborhood meaning anyplace in switzerland. It the bulls eye of Switzerland. You wanna go to St Moritz? Take lots a money and keep you nose above your forehead.
Engelberg is THEE place to go winter and summer and it's the place to bring guests when they are looking for the real alps and the authentic Swiss experience. So you were there on a bad day. boohoo. Hell I was in Alyeska, Alaska the other day and even though a cafe was open they wouldn't serve me because they said it wasn't the season yet.
The staff at Engelberg is overworked and under paid. Did you smile when you asked? Now they probably have their feelings confirmed about Americans. Thanks for ruining it for us. Cheers