bringing on a swell bottle?

can we bring those on board? it will be empty.

I've never heard of this but Googling it, it is just a cup, right? Yes you are allowed to take cups on board.

I've brought on "peachy" bottles, "keen" bottles, "groovey" bottles, and bottles I really really "liked".

I guess you can bring on a "swell" bottle. :')

can we bring those on board? it will be empty.

I bring on my S'well bottle ever cruise. Fill it up with water by the pool or throw it in my backpack for the islands

Yes, we always bring our Yeti's.