deposit
partial payment to secure a venue or service
force majeure clause
part of the contract that limits the liability of the venue or vendor should an unexpected or uncontrollable event occur
guarantee
confirmed number of meals or servings you will be paying for whether or not those will be consumed by attendees at your event. Venues typically require these 72 hours prior to the event.
master account
set up with the venue to which authorized charges incurred by a group or planner can be charged
plus plus (++)
reflect the level of tax and gratuities (tip) charged by a venue if not included in the price, always identified as a ++ on your orders
rider
an amendment to a contract