A source tells PEOPLE guests were given instructions regarding what time to be ready, but not information on where they would ultimately be heading

Greenpeace has joined the protests against Jeff Bezos and Lauren Sánchez’s upcoming Venice wedding by unfurling a huge banner in St. Mark's Square.

Activists with Greenpeace, No Space for Bezos, and a UK-based group called Everyone Hates Elon have all been making their displeasure known this week, with a large banner unfurled in St. Mark’s Square reading, “If you can rent Venice for your wedding, you can pay more tax.”