Dry cleaning and pressing your wedding gown...?

It's not necessary, if you don't want to then don't. My dress is going to be steamed at the bridal shop before I pick it up, and will clean it if something happens to it while it's in their care (I don't wear makeup often so I'm not worried about that). But if you think it's good then don't bother. Maybe put it on and ask someone who doesn't know about the spot if they can see anything and see if they notice it without you pointing it out.

I ordered my dress online but when I went to try on dresses at David's Bridal they recommended getting the dress steamed ahead of time to give the dress a fresh, look without looking stiff. I chose a dress that has tulle and large pickup's which also makes it important so it's full and puffy and not flat.

Mine has pickups as well but no tulle, I will have to look into that. Puffy is much better then flat!!

I'll probably have mine steamed and hang it and the slip upside-down to maximum volume.

Kshively: never thought about hanging the dress upside-down.

Has anyone done this or know anyone who has?

My MtOH did and she said that it helped give her dress some "umph" but I'm not sure how long that lasted...

Thats a good idea!