Since there are only UP TO 5 of these studios (less if any of the 2br villas are booked, because the 2nd bedroom is one of the 5 studios) I'd say your chances are very close to zero. If you're looking for just 1 or 2 nights, and want the Fr/Sat nights your chances improve but are still very small.
Go on the waitlist but book something else so you have a place to stay.