Here's my take:
Zumba Gold is a good workout. It has the great staging like the other Zumba, but not a "night club" scene; more of a high-end studio. It also has a fairly mature lady running it with the Zumba master (what's his name again?) and fellow participants. The lady is quite a bit older than me (and what's with those bat-eye fake lashes?) but she is in great shape and love her Zumba.
The workouts are a bit slower and definitely work with aging bodies in their cues, etc. Still, I didn't feel as challenged as in regular Zumba (nor should I). I ended up returning this set and continuing with regular Zumba (the Exhiliarate series) as I am a regular exerciser and don't feel this was really giving me the workout and sweat I sought.
That said, it would be an ideal workout for you if: 1.) you don't exercise regularaly--at any age, 2.) you are over 60 and still want a good workout, but understand you need to take things easier for your particular body needs, 3.) just want to do a Zumba workout, but mix it up. This might be a good fit for those days you want to take it a bit easier, even as a regular exerciser.
Caveat: With either reg. Zumba or the Gold, don't try it on carpet! Try to do it on a floor (mine is wood, so it works well). With any dance you can twist a knee or ankle (at any age) and really hurt yourself. Also, the right shoes are key. Anything with too much grip will NOT work. Be sure you can "slide" around a bit for the most fun and non-hurtful workout.