We are scheduled for a first time trip on the Auto Train in June. I have one child who will be 22 months at travel. I did not purchase her a ticket, as she will be a lap baby and we have a sleeper room. What kind of identification is required to prove she is under two, or is there any id needed? The only thing I can find is that children under 15 do not need id when traveling with an adult, but is Amtrak like airlines in that they require Id for lap babies? I am traveling for a long trip and would like to avoid bring a birth certificate if at all possible.