Can Facetite be used to correct malar mounds or festoons? Or would a different type of laser/RF treatment be more successful?

As in most of these cases, the treatment must be individualized.  Malar mounds and festoons are traditionally very difficult things to deal with, and some of this has to do with the anatomy of the problem, and some has to do with the characteristics and quality of the tissues involved.  If the majority of the laxity creating the malar mounds and festoons is sufficiently far away from the orbit, or the "eye socket," it might be possible to use the FaceTite probe to create some contraction of the tissues.   In such cases I would also suggest the addition of Fractora as this will also help by creating the same kind of contraction in the skin and superficial layer just under the skin.  Again, this has to be used sufficiently far from the orbit to be safe.  The tissues involved in these deformities are generally very thin, and extreme caution must be exercised when using this approach, as burns and scarring can result.  You will need to have a personal consultation and examination with a surgeon who is experienced in using FaceTite to determine if this is an option for you.  My suggestion is to find a surgeon (not a dermatologist or other non-facial surgery specialist) to evaluate you, as in this case almost more than any other on the face, an intimate understanding of the three dimensional surgical anatomy is important to be sure that the procedure is done safely and most effectively.  This can be a plastic surgeon, a facial plastic surgeon, or in this case an occuloplastic surgeon as well.  Best of luck!