Thanks for all of the replies! These are really reassuring. My newest little boy will be nearly four months at the time of our trip. I realize that there's not much he will be able to do, but my toddler and husband have such a wonderful time DW! Disney makes it very easy to bring babies because the baby stations, etc. are very nice. I think bringing him along at this age will be okay based on reading everyones posts! I am looking forward to our vacation!