About movie tickets!!?

I want to take my little brother to see Shrek Forever after, but since I'm only 15 and don't have as much money, I want to take him in the morning, to get cheaper tickets. Anyways, I looked at the AMC website and they had 12:01 p.m. as the only showtime. My question is do they still give the ticket to you cheap, or will they charge you regular price? Thanks in advance.