I definitely wouldn't leave your bag on your chair -- no matter what the "official" plan is, there's no guarantee you'll end up in the same chair you started in.
I think I did a wristlet for my high school graduation (white gown, so it was kinda see-thru), and a small crossbody under my gown for college (black gown). Both were totally fine -- just be sure that if you do the wristlet, you wear it on your left wrist, since you'll be shaking hands with your right hand.
I think I did a wristlet for my high school graduation (white gown, so it was kinda see-thru), and a small crossbody under my gown for college (black gown). Both were totally fine -- just be sure that if you do the wristlet, you wear it on your left wrist, since you'll be shaking hands with your right hand.
