RCI touts this as an improvement over the old program, but it actually limits the amount of points one can use for airfare, hotels, etc. If you only had 25,000 pts you can only use them towards airfare that costs LESS than $300. If the airfare was $310, you're out of luck.
Common side effects of Zylet include:  increased intraocular pressure and superficial punctate keratitis. Other side effects include: burning sensation and stinging sensation. See below for a comprehensive list of adverse effects.
Common side effects for zoledronic acid (and denosumab) include osteonecrosis of the jaw, back pain, pain in the extremities, musculoskeletal pain, high cholesterol levels, and urinary bladder infections. Of major concern is that far fewer studies have been done using denosumab than the bisphosphonates.