Contestants
At minimum, your contestant packet should include an intro from you or the pageant committee with the main details. Additional pages should include the pageant itinerary, an emergency contact, rules, how points are calculated and a sample title holder contact.
Regarding marketing to contestants, this should be well thought out on how you will advertise the pageant and when those steps will take place. Will there be a fee to enter?
Sponsors
I could (and will be
) writing an entire document on how to ask sponsors properly, but in the meantime, you know your area and clientele best. Go in with your best foot forward and be prepared with all stats and details of your event. Be prepared to speak on it and share on a hard/electronic pdf document. Sarah Kelsey with Rhinestone Lipgloss has a great video about the don’ts of sponsorship asks.