I will be taking my middle two children to MK in a couple of weeks (mid Sept). They are 11 months apart. DD will turn 2 the week before we go and DS will be 3 the first week of Oct. I wondered if I need to take any proof of age with me since he is two but being so close to his b-day. I worry having both kids so close in age that they will question me about him. Should I take his birth certificate jsut in case?