We have a party of 9 going to DL next month. The party will kind of be split in 2. DH, DS and myself, then SIL, BIL and their 4 kids. We are taking 2 different flights and my family will get in early afternoon on arrival day (saturday), the other family wont get in until later in the evening. I booked the whole trip, so everything is in my name except for their hotel room. We had no plans on doing DL on arrival day. However since we get in so early, I was thinking of surpising DS and DH and upgrading our 3 day park hopper to 4 day and just starting that day. I have never done that before and I'm not really sure how it works. I ordered my tickets from GetAwayToday.com and all the stuff should be arriving in the mail soon. Last time we got a piece of paper to take to the ticket booth and they gave us our tickets. I believe I will need to do the same this time around. So when I pick up the tickets can I just ask to upgrade from 3 to 4 days on just ours? What will the price difference be? I believe the tickets I got from GetAwayToday were less then what they are directly through Disney, so how does that work?

. I'm guessing I did pay the $255.