Well, the short answer is: yes and no. You will have one robe per passenger if you are Diamond Level (and I think Platinum, as well) C & A members, or if you are in a suite. Otherwise, you won't have any. I think you may be able to ask your cabin steward for robes if you don't get them automatically.
Just ask your cabin attendant for robes if they are not already in the cabin, I've never had a problem with that. I'd hate to take up luggage space packing robes, plus with the luggage weight limit, you really need to limit what you'd like to pack.