I know that some conference venues and centers are in heavy demand and need to be booked early. Such as a good conference center in Christchurch, where I work from. But I also know that you will have trouble filling a conference center if you have a speaker who fails to sell himself in your advertising before the conference.What I mean is, you need to have the speaker you audience will want to come to listen to. You also need a good venue, but that is secondary.So, how do you go about choosing a good speaker? Well, the best place to start is to write down the possible types of speakers you could invite to your conference. You could get one who is a celebrity. Perhaps a rising young sportsman. Possibly a local movie star or pop singer. Or you could go for a professional speaker who is on the circuit. A known name. A reliable, top quality speaker with experience. Or you could bring in a local speaker. Or go for a foreigner, from across the border (here in Christchurch, New Zealand, that would be from across 1200 miles of the Tasman Ocean, in Australia) or from the other side of the world (who may be in the country for another engagement and be abler to stop at your conference on the same visit).What are the pros and cons of each type of possible speaker? Write them down. What type would the audience appreciate most? Why are we running this conference and what kind of speaker would serve that purpose best.There are serious questions here, and they will directly affect your conference numbers. So take your time and find the best answer to this issue.