Activity for Brittany

Hello! Does anyone have any cute ideas for asking two 7 year old boys to be ushers for the ceremony? Their siblings will be getting asked to be flower girls and ring bearers so I want to include something fun for them, too.

Does anyone have any experience ordering wedding dresses from marryingdress.com or whitebridaldress.com? I'm so nervous ordering from a budget site but they seem to have my dream dress at a price I can actually afford.