I loved this place. We went for the pumpkin patch and there were plenty of pumpkins to go around. The concession stand was reasonablely priced, I think it was like $2 for a hot dog. The PhX zoo charges over $5 for a dog and maybe some chips. To the people who comapred the farm to places like the zoo or indoor amusement centers, keep in mind those places charge alot more than $3-7 per person, and they are a completely different thing.
As for the person from CA, seems very arrogant to come in with an iPad expecting them to honor the coupon that way. Not everyone can afford ipads, and mobile payment is still pretty new, this is a down home farm, not Starbucks, so that is like asking for special treatment. And I certainly don't know why you would expect not to pay for a kid over 1. My kid didn't walk till she was 15 months either, but I didn't think that bought me special treatment either.