We were the only ones who availed the walking tour. We had the tram all to ourselves and there were only five of us. The good thing about the walking tour is you would be able to explore more of Corregidor at your own time and pace without waiting for others. "Walking tour" is not walking all the time. We were fetched by a tram from the docking area and around the island. The tour guide was very entertaining. We also had a great buffet lunch. I'll be back again someday!