You will have to buy twice. Buy the 3 tickets and then go back and buy the new higher second one. You will have 2 different reservation numbers which is not a big deal and you can buy all of the tickets while in your true blue account so that you can track them. I buy tickets for my adults kids and grandkids all of the time. And if the price drops on your odd ticket you can call and get the credit in your true blue account even though it's not your ticket. They will look to see who paid for it and then will put it in your true blue account. Just recently I saw that there were only "3 at that price" and I had 2 reservations for 3 each (I've done this before, so know the rules). So I called and had the price adjusted on one reservation for 3. Then I went back to the computer and saw that it was still showing "3 at that price", so called again and they adjusted the second set of 3. So sometimes when it says 3 at this price, it really isn't too accurate. Just make sure the the reservation for one is an adult or an older kid. You can choose your own seats, so that's not an issue.