Yes, they still do the family-boarding between the As & Bs. Depending on how the GA runs things, though, only one adult might be allowed to board with the 2 year-old. Doesn't happen often, but I have seen it. Usually the GAs let the entire family on with the toddlers. I would go ahead and get your passes and if they're worse than family-boarding, so family-boarding.
Your party will still need boarding passes to get through security anyway,
agnes!
Your party will still need boarding passes to get through security anyway,
agnes!