Professional speakers have dedicated fax lines and automated systems to send out press kits when they are out speaking to corporations and associations. They will laugh and clap for their friends and when they get up to speak, their friends will laugh and clap for them. And don't forget the most important question of all. If they say no, then get another speaker. Don't believe everything a speaker says.
Many speakers oversell and under produce.
Celebrities have been known to cancel at the last minute. You are paying four thousand dollars for all the years, energy and effort it took to create the speech. Don't be too fast to choose the least expensive entertainer. Take some time to reflect on your wants and needs for top entertainment over novices. Professional Speakers that we work with command fees of four thousand dollars and up for a keynote speech.