What would be best result to treating my festoons. I am considering laser and blepharoplasty. (Photos)

Hello tadaniels2007,
I dont know if lasering will give you the bang for the buck so to speak. The problem is either fluid or tissue laxity under the skin. If there is an underlying reason for the festoons such as thyroid disease then any treatmet including surgery might not give you the ultimate result. First step is to find out the underlying cause of your festoons. If you choose to address this I believe the right type of filler augmentation is your best noninvasive option with the least complication. Your previous filler experience certainly can shine some doubt but rest assured it can work. The option with the best longevity and most natural result would be a simple surgical approach. My suggestion is to seek out an experienced oculoplastic surgeon to discuss your risks, complication and benefits.
Cheers

Looking at the photos, I think best treatment would be filler injection around the "festoons" as there is hollowness present.

Hello,This is a common and challenging condition.  In our practice, we have successfully "improved" the appearance using dermal fillers if a patient is not a good candidate for, or is averse to, a surgical option.  It's understandable that your previous filler experience was not satisfactory, as many injectors may not realize the best approach or set the correct expectations of improvement. Being that the issue is the festooning/bulge, the goal is to camouflage this by blending the two areas or bridging the gap, so to speak.  Having an in-person consultation for both options (surgery vs filler) may be worthwhile in finding a better outcome. Lastly, lasers will not improve this condition.