Exporting Order Data and ticket purchasing issues

What is the best way to export the order data and get the seat and zone? I also ran into a few issues, Ive only got 242 seats for sale and on the first day we ran into the server being overloaded and the ticket reservation system not loading correctly. There were probably only 40 people trying to buy tickets so it shouldn't have been a terrible strain. I also had probably ten tickets where they were able to buy a seat that was already purchased. There's also no way for me to change their seat after they purchase it (that I know of) besides make a note and double click the seat on the map to make it unavailable.