Thanks for the encouragement.
It is more of a mental thing than a stomach thing, if you know what I mean. I don't even like reg sodas, popcorn, and junk (etc chips, my biggest weakness), so I won't be that tempted, but I don't want to totally stick out like a sore thumb. I'm already an introvert (though not shy) so get-togethers make me nervous, plus I was never into the whole "college" thing, and I don't want to embarrass my sister by coming of as stuck-up. I am planning on bringing some coke zero and sun chips with me as ballast.