Disney's summer theme park revenues have been some of the weakest of the year recently. (Joe Burbank/Orlando Sentinel/Tribune News Service via Getty Images)TNSDoubt has been cast on the accuracy of Disney’s documents after it emerged that the revenue of its theme parks division hit the lowest level of the year during the summer season for the past two years running despite claims in its filings that it generally increases in that period.The discovery came to light through analysis of Disney’s results for th ...