i haven't flown with layla yet but i just wanted you to know that if you plan on brining your pup with you you should book your ticket soon because some airlines only allow 2-3 dogs in the cabin during a flight so you want to make sure you are one of those people! i dont' imagine it will be any harder to move around with your dog than with a carry on... and if you don't have one yet make sure you get her used to it so she is comforable before the flight
good luck. can't wait to see pictures of your daughters wedding!!!