Thanks to all for the feedback and guidance. I appreciate it. My travel agent partners with an excursion company that doesn't include a maximum age in the Restrictions section of their excursions. I will book excursions through them.
I'm planning a Royal Caribbean cruise with my 82-year-old parents in October and I'm seeing that excursions have a maximum age limit of 80 years. Does Royal Caribbean actually enforce this or is there a way around it? Thanks.