Definitely don't sedate Ky...I had actually asked the vet about that for Buck as he is soo high strung, he really discouraged me on that...What the kennel in Ireland did before they flew home was start giving Buck Chamomile to calm him, not sure it helped, but they had a very long flight...The plastic crates are great Ky, you can get the stainless steel water bottles to attach, what we did was fill them almost all the way and then froze them before taking the dogs to the airport....Trying to think of what else you need to know...The good thing is, that it's not that long of a flight, you guys can meet them, it won't be strangers and that will go a long ways to making both Isis & Onyx feel better...