Are you treating them as guests only, which is a huge honor in itself, or are you doing something special instead?
For us, it was really hard to pick 3-5 people on each side to honor as attendants because we love everyone in our various friend groups equally. Also, in our circles, readers and other roles don’t exist because the officiant covers that. Keeping budgets in mind, it’s not feasible or common in our circles to have the destination bachelor/ette weekends separate from the wedding day/weekend.
So while we did choose attendants on each side, we would like to do something to let the others know how much they mean as well.