Has anyone purchased a phone from Amazon for AT&T and noticed they don't offer the unlimited messaging for families at $30?

I am most likely going to be ordering Veer's today, and I have read that you can easily login to your ATT account and change your plan details (this was in regards to data). Has anyone done this with messaging? I don't like dealing with customer service if I don't have to so I was just hoping to verify I could do this when the phones show up.