By Sara Rossi and Gavin Jones ROME (Reuters) -Mass tourism, impossibly high rents, worker exploitation, inequality and elitism: Venice, Italy's protests in recent days against Jeff Bezos and Lauren Sanchez's high-profile wedding have highlighted growing global grievances.

The lavish wedding party of Amazon founder Jeff Bezos and TV presenter Lauren Sanchez concludes this evening in Venice with the main gala event. But as their celebrity guests step into water taxis from their luxury hotels, paparazzi poised, some Venetians are gathering to protest against the big event.

The sky itself is no limit for billionaire Jeff Bezos and fiancée Lauren Sánchez, who have traveled into space — and expectations were about as high ahead of their wedding in Venice on Friday.