We went to Club Med in Ixtapa in 1992 (age 39) and again in 1997. I'd recommend it. DD went too. It was family-oriented, with a circus school, plus tons of other activities. You could choose to get involved in activities or not.
The first time, we planned to just lie around and not get involved, but they did a good job of roping us in, and we enjoyed it (silly team contests, etc.). We met some friends that we still correspond with.
The second time there was less effort to get people involved.
In any case, you may choose to sit and read a book the entire time if you wish.
Things got a little wild on the Parents Only island trip, but nothing we couldn't handle.
Example, random man and woman go into the water and switch bathing suits. Lots of drinking.
Lots of good food.
Why do you guys not recommend Club Med for people over 45?
Just yesterday I was looking into this bike trip
for a future vacation.