we took my inlays who are 78-79. They did good. We found that they had spots where they could enjoy in cockpit/shade and we would get them situated before moving much. Assisted (fall precaution) if needed to go to head while moving. One was better physically and could pretty much get around even under way. Getting in dingy was a little challenging. As trip progressed, we planned dock stops for when they needed to go to shore (every other day or 2). If they are "not the traveling type", they likely will enjoy the scenery from the boat and being a part of your family vacation.... watching you snorkel , etc. I don't think I would put them out on land as they might just sit in hotel room all day.