I have also been thinking about this! I looked for iron-ons at Michaels, Hobby Lobby, and JoAnn Fabrics but I have yet to find any $9.99 wouldn't be bad though!
I like that quote!! May not have the perfect dress but you will have to perfect man! Fabulous!! I have a separate dress for my TTD session. I ended up finding a flowy chiffon dress that mimics the style (v-neck) of my actual wedding dress on clearance at Macys!!
I've started to worry about this too and have decided that I will have my parents, sister, FI, and possibly FI's parents bring a 2nd person bag to check filled with everything for the OOT bags and reception decor.