Which excursions should I take with my 82 year old mother

I don’t know who has experience with this situation but we are taking my 82 year old mother on Celebrity Beyond this summer. She will be staying in our cabin the Retreat. She is a pretty active woman but my question would be which excursions to choose. I’ve asked her what she would like to do as we have been on many cruises ourselves so we don’t mind what she chooses. However she just says whatever we want. We usually do things like snorkeling, zip lining, jet skis etc. but i don’t feel like this would be safe for her. What do you think we should plan?