I would respect the meeting. AA was set up specifically to deal with problems of alcoholism. It also has a tradition that states its main purpose is to carry the message to other alcoholics who still suffer. While I personally see a lot of overlap between drug and alcohol addictions, I do not identify with addictions to gambling, sex, eating, etc. Where is the line to be drawn for which addictions are allowed inside the rooms?
That said, there are plenty of AA meetings where discussing drug addictions are no problem, so just try different meetings until you find ones you like.