Drug info - Smuggling alcohol in plastic or glass?

[StigmataLectron]

Curtis and Leah are friends now, since they smoked a lot of weed over the weekend. Now, Leah says that she'll give Curtis a lot of DXM if he gets her some alcohol. For reasons I don't care to share, Curtis has to take a bottle of said vodka, pour it out into a container, fill said bottle of vodka up with water and make it look untounched, and /then/ take it to Leah.

I'm wondering if it's better to ship it to her in plastic bottles or glass ones, or if it doesn't make a difference? It's nice vodka (grey goose) and Curtis wouldn't want to risk screwing it up if it turns out that the plastic will leak alcohol or something. Thanks.