Hi Silvana,Hank, if you are reading this, you must have faced this situation at that Inn, since that is a historic building & space must be somewhat limited. How did you come up with your registration limit?
You just asked the hundred thousand dollar question, and unfortunately, I don't think there's a good answer. The only thing I can say is to cap it at the absolute highest number of people you can possibly accommodate and then hope that some of them will back out at the last minute.
For the trial event at one point I had 14 guys and 15 ladies (I'm not going to count the 11 children since their presence depends upon their parents), but over the next 10 months we lost 4 men, and 12 ladies, and even as late as the week of the event we were scrambling to fill positions. The amazing thing is, while we didn't recover our numbers, all the positions got filled! Again, thanks to our recruiters!
The trial event went off with the absolute minimum number of participants that it could go off with; and the employees were run to the bone. Again, I just need to take a second to thank all those who did attend because they're what made it the great event it was. No organizer can put on a great event -- it's all in the participants and the attitude they bring into it -- and they all came with a great attitude!
Unfortunately, I didn't answer your question, but I don't believe there is a true answer, or if there is, I haven't found it.