I just posted this in another area but I thought I'd do it here as well.
I just received the cards for our room key holders that I ordered. With my discount code I was able to buy 500 for the same price as 50, so I have lots left!
They are standard business sized cards with a glossy beach pic and saying on the front, and blank on the back. A nice touch to slide into the clear card holders to make your gifts a bit more personal.
I will send you as many as you want for 5.00 USD, including padded envelope and shipping.
If you still have a few months left in your planning I can also send you a link to the ebay listing where I ordered the clear tags and black stretchy key rings from China for a great price (9.50 USD all included for 20 of each of them) They took 7 weeks to arrive though so you just need to have plenty of time!