Do you already have your trip booked and everyone that is coming to your wedding's trip booked? I think you need to sit down and have a talk with him discussing how it is important to you for him to be involved. My fiance doesn't do much either- I ask him his opinions about things, but I pretty much handle everything and i am fine with that when I need help I ask him or my bridesmaids. If you have only been engaged for 8 months and have changed your date 3 times, I'm assuming you were planning on having a short engagement- which can be very stressful and overwhelming, esp when planning a destination wedding to make sure everything is done in time. We got engaged on Christmas and our wedding is 11 months later, on Nov 23rd.