River Park Marina

If you want a low-key afternoon without fighting for a picnic table, this Port St. Lucie spot delivers. The playground is on the newer side with slides the little ones actually want to use, and it’s geared well for kids roughly 2 to 12. Pack food and fire up the BBQ grills, because the setup here genuinely invites you to stay a while — clean restrooms, shaded tables, and enough parking that you’re not circling forever. The walking path winds close to the water and connects to trail access near the tree line, so after lunch you can stretch your legs along the St. Lucie River without loading back into the car. Fishermen and boaters are regulars here too, which gives the whole place a relaxed, locals-know-about-it kind of feel.