When we made our reservations a few weeks ago there wasn't much to choose from we are going Aug 20. We did get a few that we wanted. However now my mom is joining us. All our ressies are for 5 me, DH, DS(4), DS(2), and DS(1) infant needs a highchair. I am wondering if I call will I be able to add my mom to these with no issues? When I try and book online again NOTHING is available? I am wondering if we don't need to change anything since DS(1) is an infant and will be using a highchair instead of a chair?