Wondering what you all think about using Costco Postcards as my STDs? They are 0.69 cents and you can type in both address and return address and even the message if you'd like. FI and I took a few pictures of our date and initials written in the sand with a wave across the top (we are getting married on the beach) and are working on editing the photo to put on the front of the postcard.
Should we:
A) put STD, and typical info on the photo so its on the front of the post card and write or type a message like "hope you can make it" or something like "come wiggle your toes in the sand with us" (this might be cheesy?)
or

just put the photo and type the info in the message (our full names, date, location, website).
Is this a good idea or bad idea? Any pitfalls you might see? TIA!