May I play devil's advocate and mention what you DON'T want to do as a package?
Don't do anything that heavily relies on a third party specifically. If you have a special event and the third party is a prima donna and feels he is not getting enough attention and wants to change the whole event - then you will be totally stressed over it and have guests who are traveling for hours to get to this event...it is a real mess. Whatever you plan, make sure it is YOU who holds the reins to the event.
Example: if it is a luncheon cruise on your lake or river - then guests will understand if the boat is cancelled due to inclement weather and still enjoy your lodging. Hard to explain without saying to much, it is a situation I am currently dealing with and vowed it will never happen again!.