If it has OS or WT or any other letters next to the walking people it is not included in the "Free" options
T & C's
OLife Choice free shore excursions vary by voyage and exclude Oceania Select, Oceania Exclusive, Executive Collection, Food & Wine Trails, Wellness Discovery Tours by Aquamar, Go Local, Go Green, Beyond Blueprints and Culinary Discovery Tours.
https://www.oceaniacruises.com/legal/promotion-terms/