I'm also getting married on 30th June and although I don't have exactly your issue, I still have some worries. I ordered the dress late September and it has yet to arrive. I hope that it fits me when it gets here, it should do, but there are all those worries. What if it doesn't? What will I do? The fear is getting to me a little!
I'm trying to avoid it by being on here everyday and reading everyone's stories. That motivates me! Then I go on the tracker and plan food for the next day. So far so good. But only time will tell when the dress arrives! Ask me again in a month!
I love the sound of your dress! I think having the pictures of it on your phone is a brilliant idea. When you're reaching for the goodie bag, just pick up the phone and picture yourself in it! Do wedding planning in your downtime - I find that keeps me busy enough I forget about the snacking! Perhaps write the list of photographs that you want to have taken on the day or practice your makeup. 2 birds with one stone - you don't snack and you will look super gorgeous on the day!