I know that basically a MOH/Bridesmaid duties are to purchase the dress and show up the day of the wedding (sober).
I know they are NOT expected to:
Give a bridal shower
Give a bachelorette party
Run errands
Do DIY items
My question is this - is it improper to ask them to assist you the "day of" - such as helping you with your dress, adjusting your train, holding the ring/bouquet?