Here is what I could find about when Kate is speaking (sometimes with Jon.)
2009 Jon & Kate Appearances & Speaking EngagementsMarch 8th:First Christian Church, Elizabethtown, KY (Kate)
March 20th: Roswell United Methodist Church Roswell, GA (Kate)
NEW March 22nd: Woman's Lifestyle Show London, Ontario (Kate)
April 2nd-5th: Southern Woman's Show Nashville, TN (Kate)
April 24th: Southern Woman's Show Raleigh, NC (Kate)
May 13th: Frauenthal Center For The Performing Arts, Muskegon, MI (Kate)
September 24th: Southern Woman's Show Birmingham, AL (Jon & Kate)
October 11th: Southern Woman's Show Orlando, FL (Jon,Kate,Cara & Mady)
And, just to add my two cents...lol...I believe Kate when she said she didn't leave the house for two years or sleep. My daughter was a preemie and I literally didn't sleep for two years either...didn't leave the house much either. I can't imagine with 6 babies.