Biscayne National Park is really close to where we were staying in Homestead. We didn’t even bother to pack a lunch!
There wasn’t a lot to do at Biscayne because 95% of the park is water, protecting islands fringed with mangrove forests and coral reefs. Without a boat, we had limited options, and the 5th wheel doesn't float. We went to the Dante Fascell Visitors Center, watched the park movie and walked out a short trail that goes out to a pier.