Scott Lawrence, Judge Malcolm Keen, played a military lawyer in Donald P. Bellisario's JAG (1995), the show which launched all the NCIS spin-offs.
In general, a poker game can be played in the privacy of one's residence as long as the proprietor does not demand special compensation, or rake as it is known in some circles.
The drink Jane and Lucy share at the end of the episode is Clase Azul Tequila. An extremely expensive brand.