In the jims mowing book (see ww if you want a copy) he was on the stand at the exhibition getting all the info, methodolgy, leaflets etc, and asking all the stupid questions when the big boss came back and did recognise and threw him off the stand.
He put many of these ideas to good use.
Similarly Felix Dennis tells the story of meeting and trying to sell to his hero, spider man creator stan Lee, and he too got thrown out of the building.
Let us know how you get on.