I've had good luck when traveling to France with Mrs Hepsaint by buying in France a small inexpensive soft-sided carry-on suitcase and checking in the (4) bottles (2 per person ) of the bubbly stuff...Well packaged of course and free of charge with the included baggage allotment with DM status. I think the last suitcase i bought was either a Bluey or lilo and stitch kids suitcase. Just has to be well secured...