The only personal experience I had was I was selected to stay in the building when the Queen visited us in 200x. (I was still in school at that time, I was on the second floor with others. The Queen walked into the building, there were a lot of reporters, royal fans in front of the building. She was exactly like what we saw on the TV) She walked into the building, there are greeters standing on both sides of aisles. The president showed her some arts work. there were some short speeches done by president as well. I was not invited to have lunch with the Queen though. I didn't even bring my camera that day.That was in 200x, if I remember correctly.
Royal couple en route to Ottawa for Canadian tour
http://www.thestar.com/news/world/royalfamily/article/1017267--royal-couple-en-route-to-ottawa-for-canadian-tour