Those 2 post do mention "FREE CHIPS for every 35,000 LIKES" but they should have worded it differently because they are NOT talking about 35,000 likes to the POST, but are talking about when they receive "35,000 NEW LIKES to their actual Facebook page"..
This is why when you click the "ENTER NOW" link on that post, it takes you to a new page where there is a image that say's "HIT LIKE" along with a arrow pointing up to their PAGE "like button".
NOTE: You'll also know when DDC is referring to a actual POST because those messages say "When THIS POST receives X amount of LIKES, we'll give Free chips...
So hope this clears up all the confusion & maybe next time DDC will word things differently when they are referring to "PAGE LIKES " and NOT post likes..