Assemble your own bike, or have a shop do it? I think it depends on your own comfort level with doing the assembly at an airport with tools you have on hand. I've done the assembly of my bike at start of a trip in ariports, bus stations, train stations, and motel/hotel rooms. The important thing for me was to do a few dry runs of packing and unpacking the bike at home (with the bike shop phone number close at hand) before I tried it the first time on a trip.
As for the bike packing case; the answer depends on if I use a airline bike box or reuseable shipping case. The reuseable case can be mailed or shipped to your final destination depending on how soon you need it; I've shipped to bike shops, hotels/motels or friends homes . When I use a standard ailine bike box I check with the airlines about availability of the boxes and if the used box can be recycled or discarded.
1cycleguy
Michael Hanson
To will is to select a goal, determine a course of action that will bring one to that goal, and then hold to that action till the goal is reached. The key is action.