The Sawgrass employee who filled out the guest card was Harry Garcia. There are two copies of the guest card included in the discovery.
http://investigation.discovery.com/..._coverage/files/casey_anthony_documents01.pdf
Pages 48 and 57. (If the link doesn't open directly for you, you may have to save it to your hard drive and open.)
The first was filled out with the name Gonzale (z is dropped off). No where on the card do we see ZG sign it, it's all done by Harry. The second copy is corrected. Most likely after the investigators got there, Harry pulled the card and realized his mistake and was asked to correct it after the original copy. The only mistake LE made was not getting Harry to initial and date the correction. But if there was the vast conspiracy going on that CA thinks she so CUNNINGLY uncovered, they would have not have produced both copies...just the corrected one. It's a matter that will easily be settled in court.
The "C" that CA wants to dwell on is not a C. It's a G with a lifted portion between the bowl and the extension of the G. And I'm assuming it's the initial of the last name. But again, Harry Garcia should be able to explain both issues in court. Bottom line (lol) is...there's a phone number on the bottom line, and it was ZG's.