I'm a weekend warrior at best and have a question on etiquette:   We were playing a round the other week and after 9 holes we stopped at the club house and had lunch.   When we got back on to the 10th we were behind 10 other groups so we naturally waited. Another group approached and someone in their group said rather rudely we forfeited our spot by stopping for lunch.   What's the proper thing to do here? I have no idea what normal etiquette is but to me I...