 The expedition also comes as the investigation into the deadly implosion of the ocean gate submersible still continues. It'll take a few days for researchers to reach this site. They're slated to return August 13th. Mark Remillard, ABC News. Venice today wrapping up a pilot program charging day trippers an entrance fee determined to extend the levy, but opponents in the fragile lagoon city called the experiment a failure. Several dozen activists gathered outside the Santa Lucia train station there to protest the five euro fee.