cute or tacky...opinions, please!

Ladies and Gents,

I was thinking of buying a bunch of postcards while on my honeymoon and writing them out as my THANK YOU card...instead of using the traditional white stationery. Although, they will likely be mailed after we get back (since I'm not going to write them on the honeymoon). I just figure the words and sincerity will be the same as far I'm concerned...AND it will include the guests a bit more as to where we went.