I agree that the last several posts have been very good at summarizing the unique situation that is found in the British line of succession. IMO the public sometimes forget that William has yet to become THE heir-to-the-throne. His position does permit him some flexibility and he does have the support/approval of HM, the DoE, and the PoW to work for the people of the UK. To some people the idea of going to a familiar setting and performing a routine task is comforting and grounds them. I believe that William is one of these people.
As for William's attitude toward his future roles in the British monarchy, I'm always reminded of an answer attributed to CP Victoria of Sweden. She was apparently asked if she looked forward to becoming the Queen of Sweden. She reminded the questioner that in order for this to occur her father would have died and she was not looking forward to that happening. William will walk in two funerals before he ascends to the throne. I can understand why he doesn't overtly show much excitement when speaking of his future royal role.
As for William's attitude toward his future roles in the British monarchy, I'm always reminded of an answer attributed to CP Victoria of Sweden. She was apparently asked if she looked forward to becoming the Queen of Sweden. She reminded the questioner that in order for this to occur her father would have died and she was not looking forward to that happening. William will walk in two funerals before he ascends to the throne. I can understand why he doesn't overtly show much excitement when speaking of his future royal role.