The dress was a waste of money! I don't really know what to do with it now... But I did feel great on the day.
We made a real effort to cut down on all the little things that seem to add up, so we did the invitations / RSVPs ourselves, didn't have any favours.
We had a lot of useful friends so got things like flowers at cost (I dread to think how much they would have been... I think we would have gone for only a bouquet if we had to pay full price!) but we intentionally bought a cake because we had a really firm idea of what we wanted and didn't want to be disappointed if a friend did it and it wasn't right.
Oh, we didn't have dessert. I think that saved a fair whack. We had cake and made sure all other dietary requests (quite a few vegan friends, for instance) were handled with cupcakes.
How far along in planning are you? Do you have a venue sorted? We chose a pub we really liked the look of, so we didn't need to bother with any decorations - I think they slung up some fairy lights for us and that was the full extent, so that made things easier. Also avoided trying to choose caterers!
We spent extra to have a photo session before the wedding. Both of us are really uncomfortable in front of the camera and we felt it was worth the expense to meet the person and get a feel for what they were like / how they worked. She turned out to be lovely, and it probably wasn't a necessary expense in the end, but it did make a bit of the day I was stressed about a little less stressful.