A friend of mine was intuitive enough to figure out that the straps on the dress brought it up just enough to make it tighter (held around a slightly wider portion of my ribcage). I'm having some friends bring the necessary equipment to chop the straps if I decide I don't want to deal with them. It should still be ok. Maybe I can tuck them in - they're fairly small/thin.
My temporary bridal insanity has ended. Note to future brides: don't let alterations people put straps on a strapless dress and then send you home without a final fitting, even if they insist that "they shouldn't make any difference".
I finally got an evening with Partner today, as he got back at a reasonable hour for once I didn't have any evening responsibilities. I even got in a workout. A good Wednesday, as long as I can avoid thinking about the fact that I have one more weekend to clean my house before both of our families descend upon us.
8 hours ago