You made this???? Wow! I'm impressed! The deep cranberry color is beautiful on you - and I think the silver sandals look really nice. To me, the neckline is tacked up too high and I think the necklace is just too much, since you've already got sequins on the dress. I think I'd lower the neckline and if you want to wear a necklace I'd try just a simple pendant rather than something that fills up the entire bare space. You've got lovely collarbones - I would show them off! Also, I'm assuming that you have not yet pressed it yet, right? I ask, because, to me, it seems "puckery" at the seams and has a lot of wrinkles in it - but then maybe the material is supposed to be wrinkled?
I think the dress is fine for a beach wedding - but, I think you should plan on wearing some type of wrap with it - there is always a breeze blowing off of the ocean - and many times (especially in June) it is quite cool. We also have what they call "June gloom" which means that we get a thick marine layer and sometimes it doesn't burn off until late afternoon (if even then!) and so that makes it cooler! June is really not a summer seasonal month for So. CAL!