We do it all the time! DH is a pilot and there is NO WAY he will ever get vacation time at the end of June, when our anniversary is... Actually it is amazing he ever got the time off so we could elope! Our yearly vacation (whether to Disney or somewhere else) is our big anniversary gift to each other... So we celebrate whenever he is able to secure vacation time. Sometimes it falls on the anniversary of our honeymoon which is nice, but not always. I've even explained this to CMs when booking and they don't mind at all! I don't feel like I'm lying at all because it IS when we're celebrating. In the airline industry we are always celebrating things at off times..so you get to this point where you know that any celebration is about the people you're with and the love you have for them.... NOT about a date on a calendar.