Sikkim is the best destination for every age group. you can go for adventure as well and for elders there are many place where they can spend the good time. for the further queries in details, please let me know the no. of days, you're going to spend there.
Sikkim is an amazing choice, irrespective of the age group. You must include the following places - Gangtok, Namchi, Pelling and Lachung. For adventure, you can go riveer rafting in teesta river. Also March would be the blooming season for the valley of flower in Lachung, so a perfect time.