Clarify how save the dates should be addressed? Should it be as formal as the invitation? How should i address a person who is single? Single and guest or just the person.
They need not be as formal as wedding invitations. That said, I think they should be addressed as you would address the wedding invitation. JMHO
As far as single, I recommend you address the STD to just your friend. You can include the guest on the invitation to your friend, preferably by name, when that time comes.
Re: Save the dates