Using the cardboard box would be a good idea...not just for protecting the case, but for making sure it wasn't opened (accidentally or intentionally). As for the case you are waiting on, where are you located? We have the cases in stock and could ship one to you right away if you still have enough time before your trip. I know they are back ordered many places...same with any other accessories you might need. If you are looking to get a cardboard box locally the dimensions are roughly 26x26x12. If you need any help just let us know.
Inspire 2 Accessories
(everything is in stock)
Michael