Yes, I did see that, but went to the "details" page to see if there were more specific or limiting information and that is where the "participating" note is listed.
But I will concede the point that there is no "asterik" on that page, so unless one were scouring the details, they would get the wrong information. So on this issue I stand corrected in that Marriott could probably be a little more forthcoming at listing the free internet access limitations.