So, they offer additional flights, as you get done with your groups total flights,  whether you do it right away, or buy them for later at an amazing discount.  It is worth having the extra space on your credit or debit card to take advantage of it.  Also, the helmets ARE worth the money to rent.  Instead of just the goggles and soft head cover. They do also take pictures, I recomend buying them. THey also have cool tshirts and stuff to buy as well.  Bobby and I went to the iFly in Timonium the summer before he left for bootcamp.  It was excellent!