We submitted two appeals last year for EA P2 and meet the GBCI on the Green-built to discuss the appeal process. They were very helpful and understanding. The GBCI advised us to submit all prior submissions and a complete set of the appeal submission including the LEED online forms. If they have everything and it turns out that you have been denied the credit or prerequisite in error during the regular review process, they then might refund your money for the appeal. Also they might find errors in the prior reviews and allow you to claim savings for something, which you had in your calcs but did not claim in the final review, because of a review comment. Also keep in mind that this is a new person looking at your documentation. Also we have use a spreadsheet to show every comment it's reply and the clarifications as well as documentation related to the comment. We also highlighted the data in question or changes from one review to another to make it easier for them.