Private Tour with Rainforest and Luquillo Beach or Old San Juan tour

Some of our family members are doing a private El Yunque Rain Forest tour and then they have a bit of time at the end of the tour..The tour company said they can either spend some time at the Luquillo beach and Kioskos or they could take a pass through the streets Old San Juan or check out one of the forts. They don't have too much time for the 2nd part of the tour, they are in their 20's, any suggestions on what might be the better way to go?

We will have other beaches on the itinerary so wondering if checking out Old San Juan might be the best option? Thoughts? :confused:

People in their 20's? Luquillo Beach and Los Kioskos.

I am a huge fan of the forts and i understand that people in their 20's would prefer the beach but maybe just maybe they will love the forts. You should ask them