role, they will be condemned for trading on the royal name. if they play is down, people will say, what's wrong with you? shouldn't you let people know your daughtersbe queen oyal role. many in the industry say their company will get a boost. this par we have four street pa coming up that have been booked becausof the royal wedding. we've seen a massive increase in themed prince and princess parties. >> reporter: but it could be a fine balancing act for kate's family. even those within the royal family have had business trouble in the past. prince edward w closed company,ardent productions secretly filmed prince william at university in scotland. the royals we're told have n problem with the middleton's family business and once the