Methinks this is but an excuse to get another outstanding lens. The speed thing is silly anyway.
Are you sure you want to drag all that stuff around Disneyland? If I were you, and I have been, many times (kids, wife, going from land to land, ride to ride, eating questionable foods at ridiculous prices, etc., etc.) I'd take a good point & shoot. Much more manageable, easy to carry with you on rides, at restaurants, etc..
Of course you should get the lens anyway!







