Bachelor and bachelorette parties

That sounds like a good idea and definitely worth trying. If you go ahead with it, please share how it works out. It could give others some helpful ideas for planning joint parties.

Often these parties are volunteered by wedding party members. If others are adding a party favorable to you as the bride or him as the groom, those could be done too. If all your friends are of the same crowd, it probably is good to have a unified party. If there are too many "strangers," it could work well to have separate parties.