We have the two year pass for Busch Gardens. It is up for renewal sometime this summer. We are meeting friends over there next week and would like to possibly add Sea World to our pass - for the 2-year 2-park pass. But we have questions - and customer service was no help. She just said to bring it to the park and they will do it for us - but she couldn't give us any details. Even called back and got the same info. Does anyone know how they decide on the price that we will be charged? Is there a time frame? if we only have 2 or 3 months left are we still elgible to add a park? She seemed to think so but just kept saying it would be prorated and didn't know how it was prorated. Does a BG pass get you a discounted Sea World ticket? (If we don't do the upgrade?) If we do the upgrade - can we buy a discounted ticket for my sons friend? A day ticket - BG has a 50% off special going right now but I didn't see anything about SeaWorld. (Possibly because my pass is BG so it doesn't mention SW?) All these questions! But If the answers are not what I am hoping I'd rather buy them in advance with a discount rather than being stuck at customer service getting all the wrong answers. Oh - and can I have my husband bring me to the "drop off" area to do the upgrade and then go park with our passes? We may do this the evening before so we won't need to park - so the next day we are not holding up the group. Thanks! I hope someone knows.