Even with the suitable for families aspect (though what does that mean, no strippers? I would assume that isn't an option anywhere in Disney).
For the women - have a nice dinner at her favorite restaurant in Epcot, have some drinks, watch Illuminations then head over to the Boardwalk. At the boardwalk, get dessert at Beaches and Cream and head to Jellyrolls.
OF course, those were just the ideas I settled on! If they don't like that, I have more!
Men- Go to Downtown Disney and eat at the House of Blues (best atmosphere for that kind of thing, but could go anywhere). Enjoy the food and a couple drinks, then...Disney Quest! Unlimited video games? Sounds like a pretty awesome bachelor party to me! Afterwards, I am sure they could head back to the House of Blues or somewhere else in DD and go to the bar.