Online SW tickets question

[ScrappinGran]

Hi, we are arriving in Orlando Sept 12 ( stay away Ike )...and would like to do Sea World on Wed the 17th. If I order the online tickets, which I believe are 57.95 Adult @ kid prices and I think it gives us an extra day...does SW mail you the tickets or can you pick them up there? I can buy them @ my local AAA offer for only a small amount more, but do not think you get the extra day. Does anyone know which would be best? We are not renting a car, will reserve a seat for the shuttle @ Shades of Green ( DH is ret. USMC ) the day before. How would I get the tickets? Help!!