Begin
writing thank you notes. There are several different opinions
on how long you have to do them (3 months, 3-6 months), but
the sooner the better. Show your guests how much you appreciate
all they put into your wedding (attending, the gifts, the money,
etc.) This way, you don't drag it out for half a year and get
tired of doing them.
If
you are changing your last name, you'll need to go to Socail
Security and get a new card. You will need to notify all your
financial institutions of the change (banks, credit cards, mortgage
companies). Change your driver's license, notify charites of
your name change, your work place (most will require a photocopy
of your new SS card), and any other entity that has your maiden
name on it.
Return
any duplicate gifts.
Keep
your important papers in a fire safe box (marriage license,
passports, visa's).
It's
a nice gesture to visit with all your bridal party again - show
honeymoon pictures, see any pictures they may have taken at
the wedding. Don't forget about them now that the wedding is
over.