I've always wanted to wear black to a wedding, but black isn't my color. :)
You can wear whatever you like!
I would love to see you in that dress! (but I still might throw you in the drink) or the one you posted yesterday that was made from the draperies! I never knew you are so formal.... you seem like a casual gal!
Whether you wear something casual or wear something dressy and change later is really up to what you want to do. I just wanted everyone to know that they don't have to dress up, and don't want ya'll to be mad at me because you dressed up and got sand in your panty hose!