Just wanted to share some positive experience which happened to me while carrying a bulky (D)SLR and two lenses ... especially since some people mentioned some bad experience when being spotted with (semi)pro equipment, being sent away or being bullied and "asked" not to take any pictures. This was on an archeological site in Mexico (Mayan temples), where part of the complex was forbidden/blocked for visitors. Anyway, I was standing in front of this temple and tried to get some good perspectives with nice light, but that was only possible if you would enter the fenced off area. Well, one of the wardens of the site saw me, looked at my camera and then invited to follow him into the fenced off area to take my pictures. He apparently appreciated "his" temples to be photographed. I think that was very kind and I was really impressed as this happens only on rare occasions. And he was not interested in any bribe money or such (as I am used to it from experience in Egypt .. there they all want bakshish). OK, and guess what, he took it even a step further and took us almost half a mile further to some temple which tourists were not allowed at at all.