Do I need to buy a tuxedo or cocktail dress to attend?
Absolutely not! When we sent out the wedding invitations, we had no idea that 'Formal' meant such expensive clothing in the context of weddings. We're sorry for the miscommunication. We just wanted to convey we wanted business-casual and up, collared shirts, suit jackets, and the like. Don't buy clothes just for the big day.
We're looking forward to seeing you there!