I ordered my textbooks from amazon.com. i selected the FREE Super Saver Shipping. It says that i have a shipping estimate of aug 17 and the super saving shipping is 5-9 days in transit, ive heard stories of ppl waiting for 3 weeks when they use super saving shipping. My university starts on the 24th. THe estimate arrival of my books is 24th-28th. I would like to have my books on the first day. What is teh change i get it early? Am i allowed to change from free super saving to standard shipping on amazon?