I've posted before about this free event coming up in central London on Feb 7th for business owners who are considering selling their business so I won't bore you with the details. This is to ask a specific question - for events like these where there are limited spaces and where one pays based on the number of attendees, how do you plan for or deal with no shows? Do you overbook and assume that a certain percentage won't make it? What percentage? Obviously, reminders and/or phone calls closer to the time to get further confirmation could help ...but that needs to be balanced by the consideration that such calls are intrusive and can be annoying (so needs to be done in moderation). But I remember my own wedding - at one of the poshest hotels in London many years ago. We invited 120 people, just family and close friends. It was a closely managed affair ... and we still had 10% no-shows! (Though, in fairness the no-shows could have been because people belatedly realised that I would be there on the day! ) So, any tips?